1
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Zabala-Lekuona A, Lopez de Pariza X, Díaz-Ortega IF, Cepeda J, Nojiri H, Gritsan NP, Dmitriev AA, López-Ortega A, Rodríguez-Diéguez A, Seco JM, Colacio E. From field-induced to zero-field SMMs associated with open/closed structures of bis(ZnDy) tetranuclear complexes: a combined magnetic, theoretical and optical study. Dalton Trans 2024; 53:7971-7984. [PMID: 38647324 DOI: 10.1039/d4dt00148f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
We have prepared a bis(compartmental) Mannich base ligand H4L (1,4,8,11-tetraaza-1,4,8,11-tetrakis(2-hydroxy-3-methoxy-5-methylbenzyl)cyclotetradecane) specifically designed to obtain bis(TMIILnIII) tetranuclear complexes (TM = transition metal). In this regard, we have succeeded in obtaining three new complexes of the formula [Zn2(μ-L)(μ-OAc)Dy2(NO3)2]·[Zn2(μ-L)(μ-OAc)Dy2(NO3)(OAc)]·4CHCl3·2MeOH (1) and [TM2(μ-H2L)2(μ-succinate)Ln2(NO3)2] (NO3)2·2H2O·6MeOH (TMII = Zn, LnIII = Dy (2); TMII = Co, LnIII = Dy (3)). Compound 1 contains two different bis(ZnDy) tetranuclear molecules that cocrystallize in the structure, in which acetato bridging ligands connect the ZnII and DyIII ions within each ZnDy subunit. This compound does not exhibit slow magnetic relaxation at zero field, but it is activated in the presence of an applied dc magnetic field and/or by Dy/Y magnetic dilution, showing two relaxation processes corresponding to each of the two different bis(ZnDy) units found in the structure. As revealed by the theoretical calculations, magnetic relaxation in 1 is single-ion in origin and takes place through the first excited state of each DyIII ion. When using the succinato dicarboxylate bridging ligand instead of acetate, compounds 2 and 3 were serendipitously formed, which have a closed structure with the succinate anion bridging two ZnDy subunits belonging to two different ligands. It should be noted that only compound 2 exhibits slow relaxation of magnetization in the absence of an external magnetic field. According to experimental and theoretical data, 2 relaxes through the second excited Kramers doublet (Ueff = 342 K). In contrast, 3 displays field-induced SMM behaviour (Ueff = 203 K). However, the Co/Zn diluted version of this compound 3Zn shows slow relaxation at zero field (Ueff = 347 K). Ab initio theoretical calculations clearly show that the weak ferromagnetic coupling between CoII and DyIII ions is at the origin of the lack of slow relaxation of this compound at zero field. Compound 2 and its diluted analogues 2Y and 3Zn show hysteresis loops at very low temperature, thus confirming their SMM behaviour. Finally, compounds 1 and 2 show DyIII based emission even at room temperature that, in the case of 2, allows us to extract the splitting of the ground 6H15/2 term, which matches reasonably well with theoretical calculations.
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Affiliation(s)
- Andoni Zabala-Lekuona
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco (UPV/EHU), 20018 Donostia-San Sebastián, Spain.
| | - Xabier Lopez de Pariza
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, Donostia-San Sebastián 20018, Spain
| | - Ismael F Díaz-Ortega
- Departamento de Química y Física-CIESOL, Universidad de Almería, Ctra. Sacramento s/n, 04120 Almería, Spain
- Institute for Materials Research, Tohoku University, Katahira, Sendai, 980-8577, Japan
| | - Javier Cepeda
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco (UPV/EHU), 20018 Donostia-San Sebastián, Spain.
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Katahira, Sendai, 980-8577, Japan
| | - Nina P Gritsan
- Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Alexey A Dmitriev
- Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Alberto López-Ortega
- Departamento de Ciencias, Universidad Pública de Navarra, E-31006 Pamplona, Spain
- Institute for Advanced Materials and Mathematics (INAMAT2), Universidad Pública de Navarra, E-31006 Pamplona, Spain
- CIC nanoGUNE BRTA, Tolosa Hiribidea 76, Donostia-San Sebastian, 20018, Spain
| | - Antonio Rodríguez-Diéguez
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
| | - José M Seco
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco (UPV/EHU), 20018 Donostia-San Sebastián, Spain.
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
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2
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Zhang J, Shen S, Puggioni D, Wang M, Sha H, Xu X, Lyu Y, Peng H, Xing W, Walters LN, Liu L, Wang Y, Hou D, Xi C, Pi L, Ishizuka H, Kotani Y, Kimata M, Nojiri H, Nakamura T, Liang T, Yi D, Nan T, Zang J, Sheng Z, He Q, Zhou S, Nagaosa N, Nan CW, Tokura Y, Yu R, Rondinelli JM, Yu P. A correlated ferromagnetic polar metal by design. Nat Mater 2024:10.1038/s41563-024-01856-6. [PMID: 38605196 DOI: 10.1038/s41563-024-01856-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 03/11/2024] [Indexed: 04/13/2024]
Abstract
Polar metals have recently garnered increasing interest because of their promising functionalities. Here we report the experimental realization of an intrinsic coexisting ferromagnetism, polar distortion and metallicity in quasi-two-dimensional Ca3Co3O8. This material crystallizes with alternating stacking of oxygen tetrahedral CoO4 monolayers and octahedral CoO6 bilayers. The ferromagnetic metallic state is confined within the quasi-two-dimensional CoO6 layers, and the broken inversion symmetry arises simultaneously from the Co displacements. The breaking of both spatial-inversion and time-reversal symmetries, along with their strong coupling, gives rise to an intrinsic magnetochiral anisotropy with exotic magnetic field-free non-reciprocal electrical resistivity. An extraordinarily robust topological Hall effect persists over a broad temperature-magnetic field phase space, arising from dipole-induced Rashba spin-orbit coupling. Our work not only provides a rich platform to explore the coupling between polarity and magnetism in a metallic system, with extensive potential applications, but also defines a novel design strategy to access exotic correlated electronic states.
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Affiliation(s)
- Jianbing Zhang
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, China
| | - Shengchun Shen
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, China
| | - Danilo Puggioni
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Meng Wang
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, China
| | - Haozhi Sha
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
- MOE Key Laboratory of Advanced Materials, Tsinghua University, Beijing, China
| | - Xueli Xu
- High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Sciences, Hefei, China
| | - Yingjie Lyu
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, China
| | - Huining Peng
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, China
| | - Wandong Xing
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
- MOE Key Laboratory of Advanced Materials, Tsinghua University, Beijing, China
| | - Lauren N Walters
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Linhan Liu
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
- MOE Key Laboratory of Advanced Materials, Tsinghua University, Beijing, China
| | - Yujia Wang
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, China
| | - De Hou
- High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Sciences, Hefei, China
| | - Chuanying Xi
- High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Sciences, Hefei, China
| | - Li Pi
- High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Sciences, Hefei, China
| | - Hiroaki Ishizuka
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - Yoshinori Kotani
- Center for Synchrotron Radiation Research, Japan Synchrotron Radiation Research Institute, Hyogo, Japan
| | - Motoi Kimata
- Institute of Materials Research, Tohoku University, Sendai, Japan
| | - Hiroyuki Nojiri
- Institute of Materials Research, Tohoku University, Sendai, Japan
| | - Tetsuya Nakamura
- International Center for Synchrotron Radiation Innovation Smart, Tohoku University, Sendai, Japan
| | - Tian Liang
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, China
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Japan
- Frontier Science Center for Quantum Information, Beijing, China
| | - Di Yi
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Tianxiang Nan
- School of Integrated Circuits, Beijing National Research Center for Information Science and Technology, Tsinghua University, Beijing, China
| | - Jiadong Zang
- Department of Physics and Astronomy, University of New Hampshire, Durham, NH, USA
| | - Zhigao Sheng
- High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Sciences, Hefei, China
| | - Qing He
- Department of Physics, Durham University, Durham, UK
| | - Shuyun Zhou
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, China
- Frontier Science Center for Quantum Information, Beijing, China
| | - Naoto Nagaosa
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Japan
- Department of Applied Physics, University of Tokyo, Tokyo, Japan
| | - Ce-Wen Nan
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Yoshinori Tokura
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Japan
- Department of Applied Physics, University of Tokyo, Tokyo, Japan
| | - Rong Yu
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China.
- MOE Key Laboratory of Advanced Materials, Tsinghua University, Beijing, China.
| | - James M Rondinelli
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA.
| | - Pu Yu
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, China.
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Japan.
- Frontier Science Center for Quantum Information, Beijing, China.
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3
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Povarov KY, Graf DE, Hauspurg A, Zherlitsyn S, Wosnitza J, Sakurai T, Ohta H, Kimura S, Nojiri H, Garlea VO, Zheludev A, Paduan-Filho A, Nicklas M, Zvyagin SA. Pressure-tuned quantum criticality in the large-D antiferromagnet DTN. Nat Commun 2024; 15:2295. [PMID: 38486067 PMCID: PMC10940708 DOI: 10.1038/s41467-024-46527-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 02/29/2024] [Indexed: 03/18/2024] Open
Abstract
Strongly correlated spin systems can be driven to quantum critical points via various routes. In particular, gapped quantum antiferromagnets can undergo phase transitions into a magnetically ordered state with applied pressure or magnetic field, acting as tuning parameters. These transitions are characterized by z = 1 or z = 2 dynamical critical exponents, determined by the linear and quadratic low-energy dispersion of spin excitations, respectively. Employing high-frequency susceptibility and ultrasound techniques, we demonstrate that the tetragonal easy-plane quantum antiferromagnet NiCl2 ⋅ 4SC(NH2)2 (aka DTN) undergoes a spin-gap closure transition at about 4.2 kbar, resulting in a pressure-induced magnetic ordering. The studies are complemented by high-pressure-electron spin-resonance measurements confirming the proposed scenario. Powder neutron diffraction measurements revealed that no lattice distortion occurs at this pressure and the high spin symmetry is preserved, establishing DTN as a perfect platform to investigate z = 1 quantum critical phenomena. The experimental observations are supported by DMRG calculations, allowing us to quantitatively describe the pressure-driven evolution of critical fields and spin-Hamiltonian parameters in DTN.
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Affiliation(s)
- Kirill Yu Povarov
- Dresden High Magnetic Field Laboratory (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany.
| | - David E Graf
- National High Magnetic Field Laboratory, Tallahassee, FL, USA
| | - Andreas Hauspurg
- Dresden High Magnetic Field Laboratory (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- Institut für Festkörper- und Materialphysik, Technische Universität Dresden, Dresden, Germany
| | - Sergei Zherlitsyn
- Dresden High Magnetic Field Laboratory (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Joachim Wosnitza
- Dresden High Magnetic Field Laboratory (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- Institut für Festkörper- und Materialphysik, Technische Universität Dresden, Dresden, Germany
| | - Takahiro Sakurai
- Research Facility Center for Science and Technology, Kobe University, Kobe, Japan
| | - Hitoshi Ohta
- Molecular Photoscience Research Center, Kobe University, Kobe, Japan
- Graduate School of Science, Kobe University, Kobe, Japan
| | - Shojiro Kimura
- Institute for Materials Research, Tohoku University, Sendai, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai, Japan
| | - V Ovidiu Garlea
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | | | | | - Michael Nicklas
- Max Planck Institute for Chemical Physics of Solids, Dresden, Germany
| | - Sergei A Zvyagin
- Dresden High Magnetic Field Laboratory (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany.
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4
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Fogh E, Nayak M, Prokhnenko O, Bartkowiak M, Munakata K, Soh JR, Turrini AA, Zayed ME, Pomjakushina E, Kageyama H, Nojiri H, Kakurai K, Normand B, Mila F, Rønnow HM. Field-induced bound-state condensation and spin-nematic phase in SrCu 2(BO 3) 2 revealed by neutron scattering up to 25.9 T. Nat Commun 2024; 15:442. [PMID: 38200029 PMCID: PMC10781965 DOI: 10.1038/s41467-023-44115-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/30/2023] [Indexed: 01/12/2024] Open
Abstract
In quantum magnetic materials, ordered phases induced by an applied magnetic field can be described as the Bose-Einstein condensation (BEC) of magnon excitations. In the strongly frustrated system SrCu2(BO3)2, no clear magnon BEC could be observed, pointing to an alternative mechanism, but the high fields required to probe this physics have remained a barrier to detailed investigation. Here we exploit the first purpose-built high-field neutron scattering facility to measure the spin excitations of SrCu2(BO3)2 up to 25.9 T and use cylinder matrix-product-states (MPS) calculations to reproduce the experimental spectra with high accuracy. Multiple unconventional features point to a condensation of S = 2 bound states into a spin-nematic phase, including the gradients of the one-magnon branches and the persistence of a one-magnon spin gap. This gap reflects a direct analogy with superconductivity, suggesting that the spin-nematic phase in SrCu2(BO3)2 is best understood as a condensate of bosonic Cooper pairs.
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Affiliation(s)
- Ellen Fogh
- Laboratory for Quantum Magnetism, Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.
| | - Mithilesh Nayak
- Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.
| | | | - Maciej Bartkowiak
- Helmholtz-Zentrum Berlin für Materialien und Energie, D-14109, Berlin, Germany
- ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell, OX11 0QX, UK
| | - Koji Munakata
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki, 319-1106, Japan
| | - Jian-Rui Soh
- Laboratory for Quantum Magnetism, Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Alexandra A Turrini
- Laboratory for Quantum Magnetism, Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, CH-5232, Villigen-PSI, Switzerland
| | - Mohamed E Zayed
- Department of Physics, Carnegie Mellon University in Qatar, Education City, PO Box 24866, Doha, Qatar
| | - Ekaterina Pomjakushina
- Laboratory for Multiscale Materials Experiments, Paul Scherrer Institute, CH-5232, Villigen PSI, Switzerland
| | - Hiroshi Kageyama
- Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan
| | - Kazuhisa Kakurai
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki, 319-1106, Japan
| | - Bruce Normand
- Laboratory for Quantum Magnetism, Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
- Laboratory for Theoretical and Computational Physics, Paul Scherrer Institute, CH-5232, Villigen-PSI, Switzerland
| | - Frédéric Mila
- Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Henrik M Rønnow
- Laboratory for Quantum Magnetism, Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
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5
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Hernandez FG, Baydin A, Chaudhary S, Tay F, Katayama I, Takeda J, Nojiri H, Okazaki AK, Rappl PH, Abramof E, Rodriguez-Vega M, Fiete GA, Kono J. Observation of interplay between phonon chirality and electronic band topology. Sci Adv 2023; 9:eadj4074. [PMID: 38100589 PMCID: PMC10848715 DOI: 10.1126/sciadv.adj4074] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 11/15/2023] [Indexed: 12/17/2023]
Abstract
The recently demonstrated chiral modes of lattice motion carry angular momentum and therefore directly couple to magnetic fields. Notably, their magnetic moments are predicted to be strongly influenced by electronic contributions. Here, we have studied the magnetic response of transverse optical phonons in a set of Pb1-xSnxTe films, which is a topological crystalline insulator for x > 0.32 and has a ferroelectric transition at an x-dependent critical temperature. Polarization-dependent terahertz magnetospectroscopy measurements revealed Zeeman splittings and diamagnetic shifts, demonstrating a large phonon magnetic moment. Films in the topological phase exhibited phonon magnetic moment values that were larger than those in the topologically trivial samples by two orders of magnitude. Furthermore, the sign of the effective phonon g-factor was opposite in the two phases, a signature of the topological transition according to our model. These results strongly indicate the existence of interplay between the magnetic properties of chiral phonons and the topology of the electronic band structure.
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Affiliation(s)
| | - Andrey Baydin
- Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA
- Smalley-Curl Institute, Rice University, Houston, TX 77005, USA
| | - Swati Chaudhary
- Department of Physics, The University of Texas at Austin, Austin, TX 78712, USA
- Department of Physics, Northeastern University, Boston, MA 02115, USA
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Fuyang Tay
- Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA
- Applied Physics Graduate Program, Smalley-Curl Institute, Rice University, Houston, TX 77005, USA
| | - Ikufumi Katayama
- Department of Physics, Graduate School of Engineering Science, Yokohama National University, Yokohama 240-8501, Japan
| | - Jun Takeda
- Department of Physics, Graduate School of Engineering Science, Yokohama National University, Yokohama 240-8501, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Anderson K. Okazaki
- Instituto Nacional de Pesquisas Espaciais, São José dos Campos, SP 12201-970, Brazil
| | - Paulo H. O. Rappl
- Instituto Nacional de Pesquisas Espaciais, São José dos Campos, SP 12201-970, Brazil
| | - Eduardo Abramof
- Instituto Nacional de Pesquisas Espaciais, São José dos Campos, SP 12201-970, Brazil
| | - Martin Rodriguez-Vega
- Department of Physics, The University of Texas at Austin, Austin, TX 78712, USA
- Department of Physics, Northeastern University, Boston, MA 02115, USA
| | - Gregory A. Fiete
- Department of Physics, Northeastern University, Boston, MA 02115, USA
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Junichiro Kono
- Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA
- Smalley-Curl Institute, Rice University, Houston, TX 77005, USA
- Department of Physics and Astronomy, Rice University, Houston, TX 77005, USA
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX 77005, USA
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6
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Zabala-Lekuona A, Landart-Gereka A, Quesada-Moreno MM, Mota AJ, Díaz-Ortega IF, Nojiri H, Krzystek J, Seco JM, Colacio E. Zero-Field SMM Behavior Triggered by Magnetic Exchange Interactions and a Collinear Arrangement of Local Anisotropy Axes in a Linear Co 3II Complex. Inorg Chem 2023. [PMID: 37991724 DOI: 10.1021/acs.inorgchem.3c02817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
A new linear trinuclear Co(II)3 complex with a formula of [{Co(μ-L)}2Co] has been prepared by self-assembly of Co(II) ions and the N3O3-tripodal Schiff base ligand H3L, which is obtained from the condensation of 1,1,1-tris(aminomethyl)ethane and salicylaldehyde. Single X-ray diffraction shows that this compound is centrosymmetric with triple-phenolate bridging groups connecting neighboring Co(II) ions, leading to a paddle-wheel-like structure with a pseudo-C3 axis lying in the Co-Co-Co direction. The Co(II) ions at both ends of the Co(II)3 molecule exhibit distorted trigonal prismatic CoN3O3 geometry, whereas the Co(II) at the middle presents an elongated trigonal antiprismatic CoO6 geometry. The combined analysis of the magnetic data and theoretical calculations reveal strong easy-axis magnetic anisotropy for both types of Co(II) ions (|D| values higher than 115 cm-1) with the local anisotropic axes lying on the pseudo-C3 axis of the molecule. The magnetic exchange interaction between the middle and ends Co(II) ions, extracted by using either a Hamiltonian accounting for the isotropic magnetic coupling and ZFS or the Lines' model, was found to be medium to strong and antiferromagnetic in nature, whereas the interaction between the external Co(II) ions is weak antiferromagnetic. Interestingly, the compound exhibits slow relaxation of magnetization and open hysteresis at zero field and therefore SMM behavior. The significant magnetic exchange coupling found for [{Co(μ-L)}2Co] is mainly responsible for the quenching of QTM, which combined with the easy-axis local anisotropy of the CoII ions and the collinearity of their local anisotropy axes with the pseudo-C3 axis favors the observation of SMM behavior at zero field.
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Affiliation(s)
- Andoni Zabala-Lekuona
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco (UPV/EHU), 20018 Donostia-San Sebastián, Spain
| | - Aritz Landart-Gereka
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - María Mar Quesada-Moreno
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - Antonio J Mota
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - Ismael F Díaz-Ortega
- Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577, Japan
| | - Jurek Krzystek
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States
| | - José M Seco
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco (UPV/EHU), 20018 Donostia-San Sebastián, Spain
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
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7
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Cutler DJ, Canaj AB, Singh MK, Nichol GS, Gracia D, Nojiri H, Evangelisti M, Schnack J, Brechin EK. Odd and Even Numbered Ferric Wheels. Adv Sci (Weinh) 2023; 10:e2304553. [PMID: 37635185 PMCID: PMC10625049 DOI: 10.1002/advs.202304553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/04/2023] [Indexed: 08/29/2023]
Abstract
The structurally related odd and even numbered wheels [FeIII 11 ZnII 4 (tea)10 (teaH)1 (OMe)Cl8 ] (1) and [FeIII 12 ZnII 4 (tea)12 Cl8 ] (2) can be synthesized under ambient conditions by reacting FeIII and ZnII salts with triethanolamine (teaH3 ), the change in nuclearity being dictated by the solvents employed. An antiferromagnetic exchange between nearest neighbors, J = -10.0 cm-1 for 1 and J = -12.0 cm-1 for 2, leads to a frustrated S = 1/2 ground state in the former and an S = 0 ground state in the latter.
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Affiliation(s)
- Daniel J. Cutler
- EaStCHEM School of ChemistryThe University of EdinburghDavid Brewster RoadEdinburghEH9 3FJUK
| | - Angelos B. Canaj
- EaStCHEM School of ChemistryThe University of EdinburghDavid Brewster RoadEdinburghEH9 3FJUK
| | - Mukesh K. Singh
- EaStCHEM School of ChemistryThe University of EdinburghDavid Brewster RoadEdinburghEH9 3FJUK
| | - Gary S. Nichol
- EaStCHEM School of ChemistryThe University of EdinburghDavid Brewster RoadEdinburghEH9 3FJUK
| | - David Gracia
- Instituto de Nanociencia y Materiales de Aragón (INMA)CSIC & Universidad de ZaragozaZaragoza50009Spain
| | - Hiroyuki Nojiri
- Institute for Materials ResearchTohoku UniversityKatahira 2‐1‐1Sendai980–8577Japan
| | - Marco Evangelisti
- Instituto de Nanociencia y Materiales de Aragón (INMA)CSIC & Universidad de ZaragozaZaragoza50009Spain
| | - Jürgen Schnack
- Universität Bielefeld | Fakultät für PhysikPostfach 100131D‐33501BielefeldGermany
| | - Euan K. Brechin
- EaStCHEM School of ChemistryThe University of EdinburghDavid Brewster RoadEdinburghEH9 3FJUK
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8
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Huang J, Yue Z, Baydin A, Zhu H, Nojiri H, Kono J, He Y, Yi M. Angle-resolved photoemission spectroscopy with an in situ tunable magnetic field. Rev Sci Instrum 2023; 94:093902. [PMID: 37682038 DOI: 10.1063/5.0157031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 08/20/2023] [Indexed: 09/09/2023]
Abstract
Angle-resolved photoemission spectroscopy (ARPES) is a powerful tool for probing the momentum-resolved single-particle spectral function of materials. Historically, in situ magnetic fields have been carefully avoided as they are detrimental to the control of photoelectron trajectory during the photoelectron detection process. However, magnetic field is an important experimental knob for both probing and tuning symmetry-breaking phases and electronic topology in quantum materials. In this paper, we introduce an easily implementable method for realizing an in situ tunable magnetic field at the sample position in an ARPES experiment and analyze magnetic-field-induced artifacts in the ARPES data. Specifically, we identified and quantified three distinct extrinsic effects of a magnetic field: constant energy contour rotation, emission angle contraction, and momentum broadening. We examined these effects in three prototypical quantum materials, i.e., a topological insulator (Bi2Se3), an iron-based superconductor (LiFeAs), and a cuprate superconductor (Pb-Bi2Sr2CuO6+x), and demonstrate the feasibility of ARPES measurements in the presence of a controllable magnetic field. Our studies lay the foundation for the future development of the technique and interpretation of ARPES measurements of field-tunable quantum phases.
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Affiliation(s)
- Jianwei Huang
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA
| | - Ziqin Yue
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA
- Applied Physics Graduate Program, Smalley-Curl Institute, Rice University, Houston, Texas 77005, USA
| | - Andrey Baydin
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA
- Smalley-Curl Institute, Rice University, Houston, Texas 77005, USA
| | - Hanyu Zhu
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, USA
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai 980-8577, Japan
| | - Junichiro Kono
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA
- Smalley-Curl Institute, Rice University, Houston, Texas 77005, USA
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, USA
| | - Yu He
- Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA
| | - Ming Yi
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA
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9
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Dai JW, Li YQ, Li ZY, Zhang HT, Herrmann C, Kumagai S, Damjanović M, Enders M, Nojiri H, Morimoto M, Hoshino N, Akutagawa T, Yamashita M. Dual-radical-based molecular anisotropy and synergy effect of semi-conductivity and valence tautomerization in a photoswitchable coordination polymer. Natl Sci Rev 2023; 10:nwad047. [PMID: 37476568 PMCID: PMC10354699 DOI: 10.1093/nsr/nwad047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/05/2022] [Accepted: 12/27/2022] [Indexed: 07/22/2023] Open
Abstract
Organic radicals are widely used as linkers or ligands to synthesize molecular magnetic materials. However, studies regarding the molecular anisotropies of radical-based magnetic materials and their multifunctionalities are rare. Herein, a photoisomerizable diarylethene ligand was used to form {[CoIII(3,5-DTSQ·-)(3,5-DTCat2-)]2(6F-DAE-py2)}·3CH3CN·H2O (o-1·3CH3CN·H2O, 6F-DAE-py2 = 1,2-bis(2-methyl-5-(4-pyridyl)-3-thienyl)perfluorocyclopentene), a valence-tautomeric (VT) coordination polymer. We directly observed dual radicals for a single crystal using high-field/-frequency (∼13.3 T and ∼360 GHz) electron paramagnetic resonance (EPR) spectroscopy along the c-axis, which was further confirmed by angle-dependent Q-band EPR spectroscopy. Moreover, a conductive anomaly close to the VT transition temperature was observed only when probes were attached at the ab plane of the single crystal, indicative of synergy between valence tautomerism and conductivity. Structural anisotropy studies and density functional theory (DFT) calculations revealed that this synergy is due to electron transfer associated with valence tautomerism. This study presents the first example of dual-radical-based molecular anisotropy and charge-transfer-induced conductive anisotropy in a photoswitchable coordination polymer.
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Affiliation(s)
| | | | | | - Hai-Tao Zhang
- Institute of Inorganic and Applied Chemistry, University of Hamburg, Hamburg22761, Germany
| | - Carmen Herrmann
- Institute of Inorganic and Applied Chemistry, University of Hamburg, Hamburg22761, Germany
| | - Shohei Kumagai
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai980-8578, Japan
| | - Marko Damjanović
- Institute of Inorganic Chemistry, University of Heidelberg, HeidelbergD-69120, Germany
| | - Markus Enders
- Institute of Inorganic Chemistry, University of Heidelberg, HeidelbergD-69120, Germany
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai980-8577, Japan
| | | | - Norihisa Hoshino
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai980-8577, Japan
| | - Tomoyuki Akutagawa
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai980-8577, Japan
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10
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Landart-Gereka A, Quesada-Moreno MM, Palacios MA, Díaz-Ortega IF, Nojiri H, Ozerov M, Krzystek J, Colacio E. Pushing up the easy-axis magnetic anisotropy and relaxation times in trigonal prismatic Co II mononuclear SMMs by molecular structure design. Chem Commun (Camb) 2023; 59:952-955. [PMID: 36597978 DOI: 10.1039/d2cc06012d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The replacement of pyridine by 1-methyl-imidazol in the arms of a N6-tripodal ligand allows preparing two new CoII complexes with quasi-ideal triangular prismatic geometry, which behave as SIMs (Single Ion Magnets) at zero dc field with enhanced axial magnetic anisotropy, magnetic relaxation times and magnetic hysteresis.
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Affiliation(s)
- Aritz Landart-Gereka
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
| | - María Mar Quesada-Moreno
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
| | - María A Palacios
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
| | - Ismael F Díaz-Ortega
- Institute for Materials Research, Tohoku University, Katahira, Sendai, 980-8577, Japan.,Departamento de Química y Física-CIESOL, Universidad de Almería, Ctra. Sacramento s/n, 04120, Almería, Spain
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Katahira, Sendai, 980-8577, Japan
| | - Mykhaylo Ozerov
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - J Krzystek
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
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11
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Zhang HL, Zhai YQ, Nojiri H, Schröder C, Hsu HK, Chan YT, Fu Z, Zheng YZ. {Sc nGd n} Heterometallic Rings: Tunable Ring Topology for Spin-Wave Excitations. J Am Chem Soc 2022; 144:15193-15202. [PMID: 35926139 DOI: 10.1021/jacs.2c05421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Data carriers using spin waves in spintronic and magnonic logic devices offer operation at low power consumption and free of Joule heating yet requiring noncollinear spin structures of small sizes. Heterometallic rings can provide such an opportunity due to the controlled spin-wave transmission within such a confined space. Here, we present a series of {ScnGdn} (n = 4, 6, 8) heterometallic rings, which are the first Sc-Ln clusters to date, with tunable magnetic interactions for spin-wave excitations. By means of time- and temperature-dependent spin dynamics simulations, we are able to predict distinct spin-wave excitations at finite temperatures for Sc4Gd4, Sc6Gd6, and Sc8Gd8. Such a new model is previously unexploited, especially due to the interplay of antiferromagnetic exchange, dipole-dipole interaction, and ring topology at low temperatures, rendering the importance of the latter to spin-wave excitations.
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Affiliation(s)
- Hao-Lan Zhang
- Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, Xi'an Jiaotong University, Xi'an 710054, Shaanxi, China
| | - Yuan-Qi Zhai
- Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, Xi'an Jiaotong University, Xi'an 710054, Shaanxi, China
| | - Hiroyuki Nojiri
- Institute for Materials Research (IMR), Tohoku University, Katahira, Sendai 980-8577, Japan
| | - Christian Schröder
- Bielefeld Institute for Applied Materials Research, Bielefeld University of Applied Sciences, Bielefeld D-33619, Germany.,Faculty of Physics, Bielefeld University, Bielefeld D-33615, Germany
| | - Hung-Kai Hsu
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Tsu Chan
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Zhendong Fu
- Neutron Platform, Songshan Lake Materials Laboratory, Dongguan 523808, China
| | - Yan-Zhen Zheng
- Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, Xi'an Jiaotong University, Xi'an 710054, Shaanxi, China
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12
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Haberl B, Quirinale DG, Li CW, Granroth GE, Nojiri H, Donnelly ME, Ushakov SV, Boehler R, Winn BL. Multi-extreme conditions at the Second Target Station. Rev Sci Instrum 2022; 93:083907. [PMID: 36050043 DOI: 10.1063/5.0093065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
Three concepts for the application of multi-extreme conditions under in situ neutron scattering are described here. The first concept is a neutron diamond anvil cell made from a non-magnetic alloy. It is shrunk in size to fit existing magnets and future magnet designs and is designed for best pressure stability upon cooling. This will allow for maximum pressures above 10 GPa to be applied simultaneously with (steady-state) high magnetic field and (ultra-)low temperature. Additionally, an implementation of miniature coils for neutron diamond cells is presented for pulsed-field applications. The second concept presents a set-up for laser-heating a neutron diamond cell using a defocused CO2 laser. Cell, anvil, and gasket stability will be achieved through stroboscopic measurements and maximum temperatures of 1500 K are anticipated at pressures to the megabar. The third concept presents a hybrid levitator to enable measurements of solids and liquids at temperatures in excess of 4000 K. This will be accomplished by a combination of bulk induction and surface laser heating and hyperbaric conditions to reduce evaporation rates. The potential for deployment of these multi-extreme environments within this first instrument suite of the Second Target Station is described with a special focus on VERDI, PIONEER, CENTAUR, and CHESS. Furthermore, considerations for deployment on future instruments, such as the one proposed as TITAN, are discussed. Overall, the development of these multi-extremes at the Second Target Station, but also beyond, will be highly advantageous for future experimentation and will give access to parameter space previously not possible for neutron scattering.
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Affiliation(s)
- B Haberl
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - D G Quirinale
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - C W Li
- Materials Science and Engineering/Mechanical Engineering, University of California, Riverside, California 92521, USA
| | - G E Granroth
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - H Nojiri
- Insitute for Materials Research Tohoku University, Sendai, Japan
| | - M-E Donnelly
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - S V Ushakov
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85281, USA
| | - R Boehler
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - B L Winn
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
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13
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Baydin A, Hernandez FGG, Rodriguez-Vega M, Okazaki AK, Tay F, Noe GT, Katayama I, Takeda J, Nojiri H, Rappl PHO, Abramof E, Fiete GA, Kono J. Magnetic Control of Soft Chiral Phonons in PbTe. Phys Rev Lett 2022; 128:075901. [PMID: 35244438 DOI: 10.1103/physrevlett.128.075901] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 11/15/2021] [Accepted: 01/13/2022] [Indexed: 06/14/2023]
Abstract
PbTe crystals have a soft transverse optical phonon mode in the terahertz frequency range, which is known to efficiently decay into heat-carrying acoustic phonons, resulting in anomalously low thermal conductivity. Here, we studied this phonon via polarization-dependent terahertz spectroscopy. We observed softening of this mode with decreasing temperature, indicative of incipient ferroelectricity, which we explain through a model including strong anharmonicity with a quartic displacement term. In magnetic fields up to 25 T, the phonon mode splits into two modes with opposite handedness, exhibiting circular dichroism. Their frequencies display Zeeman splitting together with an overall diamagnetic shift with increasing magnetic field. Using a group-theoretical approach, we demonstrate that these observations are the result of magnetic field-induced morphic changes in the crystal symmetries through the Lorentz force exerted on the lattice ions. Thus, our Letter reveals a novel process of controlling phonon properties in a soft ionic lattice by a strong magnetic field.
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Affiliation(s)
- Andrey Baydin
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA
- Smalley-Curl Institute, Rice University, Houston, Texas, 77005, USA
| | - Felix G G Hernandez
- Instituto de Física, Universidade de São Paulo, São Paulo, São Paulo 05508-090, Brazil
| | - Martin Rodriguez-Vega
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Anderson K Okazaki
- Laboratório Associado de Sensores e Materiais, Instituto Nacional de Pesquisas Espaciais, São José dos Campos, São Paulo 12201-970, Brazil
| | - Fuyang Tay
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA
- Applied Physics Graduate Program, Smalley-Curl Institute, Rice University, Houston, Texas 77005, USA
| | - G Timothy Noe
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA
| | - Ikufumi Katayama
- Department of Physics, Graduate School of Engineering Science, Yokohama National University, Yokohama 240-8501, Japan
| | - Jun Takeda
- Department of Physics, Graduate School of Engineering Science, Yokohama National University, Yokohama 240-8501, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Paulo H O Rappl
- Laboratório Associado de Sensores e Materiais, Instituto Nacional de Pesquisas Espaciais, São José dos Campos, São Paulo 12201-970, Brazil
| | - Eduardo Abramof
- Laboratório Associado de Sensores e Materiais, Instituto Nacional de Pesquisas Espaciais, São José dos Campos, São Paulo 12201-970, Brazil
| | - Gregory A Fiete
- Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Junichiro Kono
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA
- Smalley-Curl Institute, Rice University, Houston, Texas, 77005, USA
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA
- Department of Material Science and NanoEngineering, Rice University, Houston, Texas 77005, USA
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14
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Jang H, Song S, Kihara T, Liu Y, Lee SJ, Park SY, Kim M, Kim HD, Coslovich G, Nakata S, Kubota Y, Inoue I, Tamasaku K, Yabashi M, Lee H, Song C, Nojiri H, Keimer B, Kao CC, Lee JS. Characterization of photoinduced normal state through charge density wave in superconducting YBa 2Cu 3O 6.67. Sci Adv 2022; 8:eabk0832. [PMID: 35138893 PMCID: PMC8827649 DOI: 10.1126/sciadv.abk0832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 12/15/2021] [Indexed: 06/14/2023]
Abstract
The normal state of high-Tc cuprates has been considered one of the essential topics in high-temperature superconductivity research. However, compared to the high magnetic field study of it, understanding a photoinduced normal state remains elusive. Here, we explore a photoinduced normal state of YBa2Cu3O6.67 through a charge density wave (CDW) with time-resolved resonant soft x-ray scattering, as well as a high magnetic field x-ray scattering. In the nonequilibrium state where people predict a quenched superconducting state based on the previous optical spectroscopies, we experimentally observed a similar analogy to the competition between superconductivity and CDW shown in the equilibrium state. We further observe that the broken pairing states in the superconducting CuO2 plane via the optical pump lead to nucleation of three-dimensional CDW precursor correlation. Ultimately, these findings provide a critical clue that the characteristics of the photoinduced normal state show a solid resemblance to those under magnetic fields in equilibrium conditions.
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Affiliation(s)
- Hoyoung Jang
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, Republic of Korea
- Photon Science Center, Pohang University of Science and Technology, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Sanghoon Song
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Takumi Kihara
- Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai 980-8577, Japan
| | - Yijin Liu
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Sang-Jun Lee
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Sang-Youn Park
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Minseok Kim
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Hyeong-Do Kim
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Giacomo Coslovich
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Suguru Nakata
- Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569 Stuttgart, Germany
| | - Yuya Kubota
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo, 679-5198, Japan
| | - Ichiro Inoue
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | | | - Makina Yabashi
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo, 679-5198, Japan
| | - Heemin Lee
- Departments of Physics, Pohang University of Science and Technology, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Changyong Song
- Photon Science Center, Pohang University of Science and Technology, Pohang, Gyeongbuk 37673, Republic of Korea
- Departments of Physics, Pohang University of Science and Technology, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai 980-8577, Japan
| | - Bernhard Keimer
- Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569 Stuttgart, Germany
| | - Chi-Chang Kao
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Jun-Sik Lee
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
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15
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Landart Gereka A, Quesada-Moreno MM, Díaz-Ortega IF, Nojiri H, Ozerov M, Krzystek J, Palacios MA, Colacio E. Large easy-axis magnetic anisotropy in a series of trigonal prismatic mononuclear cobalt (II) complexes with zero-field hidden single-molecule magnet behaviour: The important role of the distortion of the coordination sphere and intermolecular interactions on the slow relaxation. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00275b] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The complexes [Co(L)]X·S (X = CoCl42- , S = CH3CN (1); X = ZnCl42- , S = CH3OH (2)), [Co(L)]X2·S (X = ClO4-, S = 2CH3OH (3) and X =...
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16
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Kimata M, Sasabe N, Kurita K, Yamasaki Y, Tabata C, Yokoyama Y, Kotani Y, Ikhlas M, Tomita T, Amemiya K, Nojiri H, Nakatsuji S, Koretsune T, Nakao H, Arima TH, Nakamura T. X-ray study of ferroic octupole order producing anomalous Hall effect. Nat Commun 2021; 12:5582. [PMID: 34552070 PMCID: PMC8458343 DOI: 10.1038/s41467-021-25834-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 08/29/2021] [Indexed: 11/21/2022] Open
Abstract
Recently found anomalous Hall, Nernst, magnetooptical Kerr, and spin Hall effects in the antiferromagnets Mn3X (X = Sn, Ge) are attracting much attention for spintronics and energy harvesting. Since these materials are antiferromagnets, the origin of these functionalities is expected to be different from that of conventional ferromagnets. Here, we report the observation of ferroic order of magnetic octupole in Mn3Sn by X-ray magnetic circular dichroism, which is only predicted theoretically so far. The observed signals are clearly decoupled with the behaviors of uniform magnetization, indicating that the present X-ray magnetic circular dichroism is not arising from the conventional magnetization. We have found that the appearance of this anomalous signal coincides with the time reversal symmetry broken cluster magnetic octupole order. Our study demonstrates that the exotic material functionalities are closely related to the multipole order, which can produce unconventional cross correlation functionalities.
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Affiliation(s)
- Motoi Kimata
- Institute for Materials Research, Tohoku University, Sendai, Miyagi, 980-8577, Japan.
| | - Norimasa Sasabe
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Kensuke Kurita
- Department of Physics, Tohoku University, Sendai, Miyagi, 980-8578, Japan
| | - Yuichi Yamasaki
- Research and Services Division of Materials Data and Integrated System (MaDIS), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0044, Japan
- Center for Emergent Matter Science (CEMS), RIKEN, Wako, 351-0198, Japan
- PRESTO, Japan Science and Technology Agency (JST), Tokyo, 102-0076, Japan
- Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, Ibaraki, 305-0801, Japan
| | - Chihiro Tabata
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Osaka, 590-0494, Japan
| | - Yuichi Yokoyama
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Yoshinori Kotani
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Muhammad Ikhlas
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - Takahiro Tomita
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - Kenta Amemiya
- Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, Ibaraki, 305-0801, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai, Miyagi, 980-8577, Japan
| | - Satoru Nakatsuji
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
- Department of Physics, University of Tokyo, Hongo, Tokyo, 113-0033, Japan
- The Institute for Quantum Matter, Johns Hopkins University, Baltimore, MD, 21218, USA
- Trans-scale Quantum Science Institute, University of Tokyo, Hongo, Tokyo, 113-8654, Japan
| | - Takashi Koretsune
- Department of Physics, Tohoku University, Sendai, Miyagi, 980-8578, Japan
| | - Hironori Nakao
- Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, Ibaraki, 305-0801, Japan
| | - Taka-Hisa Arima
- Center for Emergent Matter Science (CEMS), RIKEN, Wako, 351-0198, Japan
- Department of Advanced Materials Science, University of Tokyo, Kashiwa, 277-8561, Japan
| | - Tetsuya Nakamura
- Institute for Materials Research, Tohoku University, Sendai, Miyagi, 980-8577, Japan
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
- International Center for Synchrotron Radiation Innovation Smart, Tohoku University, Sendai, Miyagi, 980-8577, Japan
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17
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Makihara T, Hayashida K, Noe Ii GT, Li X, Marquez Peraca N, Ma X, Jin Z, Ren W, Ma G, Katayama I, Takeda J, Nojiri H, Turchinovich D, Cao S, Bamba M, Kono J. Ultrastrong magnon-magnon coupling dominated by antiresonant interactions. Nat Commun 2021; 12:3115. [PMID: 34035241 PMCID: PMC8149649 DOI: 10.1038/s41467-021-23159-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 04/13/2021] [Indexed: 11/09/2022] Open
Abstract
Exotic quantum vacuum phenomena are predicted in cavity quantum electrodynamics systems with ultrastrong light-matter interactions. Their ground states are predicted to be vacuum squeezed states with suppressed quantum fluctuations owing to antiresonant terms in the Hamiltonian. However, such predictions have not been realized because antiresonant interactions are typically negligible compared to resonant interactions in light-matter systems. Here we report an unusual, ultrastrongly coupled matter-matter system of magnons that is analytically described by a unique Hamiltonian in which the relative importance of resonant and antiresonant interactions can be easily tuned and the latter can be made vastly dominant. We found a regime where vacuum Bloch-Siegert shifts, the hallmark of antiresonant interactions, greatly exceed analogous frequency shifts from resonant interactions. Further, we theoretically explored the system’s ground state and calculated up to 5.9 dB of quantum fluctuation suppression. These observations demonstrate that magnonic systems provide an ideal platform for exploring exotic quantum vacuum phenomena predicted in ultrastrongly coupled light-matter systems. Ultrastrong light-matter interactions with dominant antiresonant terms are expected to give rise to interesting phenomena such as quantum fluctuation suppression. Here, the authors propose a system of ultrastrongly coupled magnon modes in a rare earth orthoferrite as a platform for exploring such phenomena.
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Affiliation(s)
- Takuma Makihara
- Department of Physics and Astronomy, Rice University, Houston, TX, USA
| | - Kenji Hayashida
- Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA.,Division of Applied Physics, Graduate School of Engineering, Hokkaido University, Sapporo, Japan
| | - G Timothy Noe Ii
- Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA
| | - Xinwei Li
- Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA
| | | | - Xiaoxuan Ma
- Department of Physics, International Center of Quantum and Molecular Structures and Materials Genome Institute, Shanghai University, Shanghai, China
| | - Zuanming Jin
- Terahertz Technology Innovation Research Institute, Terahertz Spectrum and Imaging Technology Cooperative Innovation Center, Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, Shanghai, China
| | - Wei Ren
- Department of Physics, International Center of Quantum and Molecular Structures and Materials Genome Institute, Shanghai University, Shanghai, China
| | - Guohong Ma
- Department of Physics, International Center of Quantum and Molecular Structures and Materials Genome Institute, Shanghai University, Shanghai, China
| | - Ikufumi Katayama
- Department of Physics, Graduate School of Engineering Science, Yokohama National University, Yokohama, Japan
| | - Jun Takeda
- Department of Physics, Graduate School of Engineering Science, Yokohama National University, Yokohama, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai, Japan
| | | | - Shixun Cao
- Department of Physics, International Center of Quantum and Molecular Structures and Materials Genome Institute, Shanghai University, Shanghai, China.
| | - Motoaki Bamba
- Department of Physics I, Kyoto University, Kyoto, Japan. .,PRESTO, Japan Science and Technology Agency, Saitama, Japan. .,The Hakubi Center for Advanced Research, Kyoto University, Kyoto, Japan.
| | - Junichiro Kono
- Department of Physics and Astronomy, Rice University, Houston, TX, USA. .,Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA. .,Department of Materials Science and NanoEngineering, Rice University, Houston, TX, USA.
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18
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Qin L, Zhang HL, Zhai YQ, Nojiri H, Schröder C, Zheng YZ. A giant spin molecule with ninety-six parallel unpaired electrons. iScience 2021; 24:102350. [PMID: 33898945 PMCID: PMC8054144 DOI: 10.1016/j.isci.2021.102350] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 02/20/2021] [Accepted: 03/18/2021] [Indexed: 11/12/2022] Open
Abstract
Unpaired electrons which are essential for organic radicals and magnetic materials are hardly to align parallel, especially upon the increasing of spin numbers. Here, we show that the antiferromagnetic interaction in the largest Cr(III)-RE (rare earth) cluster {Cr10RE18} leads to 96 parallel electrons, forming a ground spin state ST of 48 for RE = Gd. This is so far the third largest ground spin state achieved in one molecule. Moreover, by using the classical Monte Carlo simulation, the exchange coupling constants Jij can be determined. Spin dynamics simulation reveals that the strong Zeeman effects of 18 Gd(III) ions stabilize the ground ferrimagnetic state and hinder the magnetization reversals of these spins. In addition, the dysprosium(III) analog is an exchange-biasing single-molecule magnet. We believe that the ferrimagnetic approach and analytical protocol established in this work can be applied generally in constructing and analyzing giant spin molecules. The largest {Cr10RE18} molecular clusters were assembled for RE = Gd, Dy, and Y The {Cr10Gd18} cluster shows a large ground spin state of ST = 48 The exchange coupling constants were determined by Classical Monte Carlo simulation Spin dynamics simulation reveals a ferrimagnetic ground state of {Cr10Gd18}.
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Affiliation(s)
- Lei Qin
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University Shenzhen Research Academy, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, Xi'an Jiaotong University, Xi'an 710054, China
| | - Hao-Lan Zhang
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University Shenzhen Research Academy, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, Xi'an Jiaotong University, Xi'an 710054, China
| | - Yuan-Qi Zhai
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University Shenzhen Research Academy, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, Xi'an Jiaotong University, Xi'an 710054, China
| | - Hiroyuki Nojiri
- Institute of Materials Research (IMR), Tohoku University, Katahira, Sendai 980-8577, Japan
| | - Christian Schröder
- Bielefeld Institute for Applied Materials Research, Bielefeld University of Applied Sciences, D-33619 Bielefeld, Germany.,Faculty of Physics, Bielefeld University, D-33615 Bielefeld, Germany
| | - Yan-Zhen Zheng
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University Shenzhen Research Academy, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, Xi'an Jiaotong University, Xi'an 710054, China
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19
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Sakon T, Yamazaki J, Komori T, Kanomata T, Narumi Y, Hagiwara M, Nojiri H, Adachi Y. The Forced Magnetostrictions and Magnetic Properties of Ni 2MnX (X = In, Sn) Ferromagnetic Heusler Alloys. Materials (Basel) 2020; 13:ma13092017. [PMID: 32344877 PMCID: PMC7254384 DOI: 10.3390/ma13092017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/16/2020] [Accepted: 04/23/2020] [Indexed: 11/16/2022]
Abstract
Experimental studies into the forced magnetostriction, magnetization, and temperature dependence of permeability in Ni2MnIn and Ni2MnSn ferromagnetic Heusler alloys were performed according to the spin fluctuation theory of itinerant ferromagnetism proposed by Takahashi. We investigated the magnetic field (H) dependence of magnetization (M) at the Curie temperature TC, and at T = 4.2 K, which concerns the ground state of the ferromagnetic state. The M-H result at TC was analyzed by means of the H versus M5 dependence. At 4.2 K, it was investigated by means of an Arrott plot (H/M vs. M2) according to Takahashi’s theory. As for Ni2MnIn and Ni2MnSn, the spin fluctuation parameters in k-space (momentum space, TA) and that in energy space (frequency space, T0) obtained at TC and 4.2 K were almost the same. The average values obtained at TC and 4.2 K were TA = 342 K, T0 = 276 K for Ni2MnIn and TA = 447 K, T0 = 279 K for Ni2MnSn, respectively. The forced magnetostriction at TC was also investigated. The forced linear magnetostriction (ΔL/L) and the forced volume magnetostriction (ΔV/V) were proportional to M4, which followed Takahashi’s theory. We compared the forced volume magnetostriction ΔV/V and mechanical parameter, bulk modulus K. ΔV/V is inversely proportional to K. We also discuss the spin polarization of Ni2MnIn and other magnetic Heusler alloys. The pC/pS of Ni2MnIn was 0.860. This is comparable with that of Co2MnGa, which is a famous half-metallic alloy.
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Affiliation(s)
- Takuo Sakon
- Department of Mechanical and Systems Engineering, Faculty of Science and Technology, Ryukoku University, Otsu 520-2194, Shiga, Japan; (J.Y.); (T.K.)
- Correspondence:
| | - Junya Yamazaki
- Department of Mechanical and Systems Engineering, Faculty of Science and Technology, Ryukoku University, Otsu 520-2194, Shiga, Japan; (J.Y.); (T.K.)
| | - Takumi Komori
- Department of Mechanical and Systems Engineering, Faculty of Science and Technology, Ryukoku University, Otsu 520-2194, Shiga, Japan; (J.Y.); (T.K.)
| | - Takeshi Kanomata
- Research Institute for Engineering and Technology, Tohoku Gakuin University, Tagajo 985-8537, Miyagi, Japan;
| | - Yasuo Narumi
- Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, Japan; (Y.N.); (M.H.)
| | - Masayuki Hagiwara
- Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, Japan; (Y.N.); (M.H.)
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Miyagi, Japan;
| | - Yoshiya Adachi
- Graduate School of Science and Engineering, Yamagata University, Yonezawa 992-8510, Yamagata, Japan;
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20
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Shiga T, Nojiri H, Oshio H. A Ferromagnetically Coupled Octanuclear Manganese(III) Cluster: A Single-Molecule Magnet with a Spin Ground State of S = 16. Inorg Chem 2020; 59:4163-4166. [PMID: 31985215 DOI: 10.1021/acs.inorgchem.9b03343] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An octanuclear manganese complex, [MnIII8(μ4-O)4(L)4(OMe)4(OAc)4(OCH2CH2NH3)4] [1; H2L = 3-(dimethoxymethyl)-2-hydroxybenzoic acid], was synthesized with an extended cubane core structure consisting of eight Mn ions bridged by O atoms. Cryomagnetic studies revealed that 1 showed a single-molecule-magnet behavior with an S = 16 spin ground state.
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Affiliation(s)
- Takuya Shiga
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan
| | - Hiroyuki Nojiri
- Institute of Materials Research, Tohoku University, Katahira 2-1-1, Sendai, Miyagi 980-8577, Japan
| | - Hiroki Oshio
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan.,State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, P. R. China
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21
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Do SH, Lee CH, Kihara T, Choi YS, Yoon S, Kim K, Cheong H, Chen WT, Chou F, Nojiri H, Choi KY. Randomly Hopping Majorana Fermions in the Diluted Kitaev System α-Ru_{0.8}Ir_{0.2}Cl_{3}. Phys Rev Lett 2020; 124:047204. [PMID: 32058744 DOI: 10.1103/physrevlett.124.047204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 10/09/2019] [Indexed: 06/10/2023]
Abstract
dc and ac magnetic susceptibility, magnetization, specific heat, and Raman scattering measurements are combined to probe low-lying spin excitations in α-Ru_{1-x}Ir_{x}Cl_{3} (x≈0.2), which realizes a disordered spin liquid. At intermediate energies (ℏω>3 meV), Raman spectroscopy evidences linearly ω-dependent Majorana-like excitations, obeying Fermi statistics. This points to robustness of a Kitaev paramagnetic state under spin vacancies. At low energies below 3 meV, we observe power-law dependences and quantum-critical-like scalings of the thermodynamic quantities, implying the presence of a weakly divergent low-energy density of states. This scaling phenomenology is interpreted in terms of the random hoppings of Majorana fermions. Our results demonstrate an emergent hierarchy of spin excitations in a diluted Kitaev honeycomb system subject to spin vacancies and bond randomness.
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Affiliation(s)
- Seung-Hwan Do
- Department of Physics, Chung-Ang University, Seoul 06974, Republic of Korea
| | - C H Lee
- Department of Physics, Chung-Ang University, Seoul 06974, Republic of Korea
| | - T Kihara
- Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai 980-8577, Japan
| | - Y S Choi
- Department of Physics, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Sungwon Yoon
- Department of Physics, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Kangwon Kim
- Department of Physics, Sogang University, Seoul 04107, Republic of Korea
| | - Hyeonsik Cheong
- Department of Physics, Sogang University, Seoul 04107, Republic of Korea
| | - Wei-Tin Chen
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
| | - Fangcheng Chou
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
- Taiwan Consortium of Emergent Crystalline Materials, Ministry of Science and Technology, Taipei 10622, Taiwan
| | - H Nojiri
- Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai 980-8577, Japan
| | - Kwang-Yong Choi
- Department of Physics, Chung-Ang University, Seoul 06974, Republic of Korea
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22
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Díaz-Ortega IF, Herrera JM, Dey S, Nojiri H, Rajaraman G, Colacio E. The effect of the electronic structure and flexibility of the counteranions on magnetization relaxation in [Dy(L)2(H2O)5]3+ (L = phosphine oxide derivative) pentagonal bipyramidal SIMs. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01412h] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The effects of the electronic structure and flexibility of triflate anions in a new high-Ueff TBPY-7 SMM, [Dy(OPCy3)2(H2O)5](CF3SO3)3·2OPCy3, have been analyzed.
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Affiliation(s)
- Ismael F. Díaz-Ortega
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- Granada
- Spain
| | - Juan Manuel Herrera
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- Granada
- Spain
| | - Sourav Dey
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Hiroyuki Nojiri
- Institute for Materials Research
- Tohoku University
- Sendai
- Japan
| | - Gopalan Rajaraman
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Enrique Colacio
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- Granada
- Spain
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23
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Palacios MA, Díaz-Ortega IF, Nojiri H, Suturina EA, Ozerov M, Krzystek J, Colacio E. Tuning magnetic anisotropy by the π-bonding features of the axial ligands and the electronic effects of gold( i) atoms in 2D {Co(L) 2[Au(CN) 2] 2} n metal–organic frameworks with field-induced single-ion magnet behaviour. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00996b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
AuI atoms play an important role in determining the anisotropy of CoII nodes in 2D AuI–CoII field-induced SIMs.
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Affiliation(s)
- María A. Palacios
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
| | - Ismael F. Díaz-Ortega
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
| | - Hiroyuki Nojiri
- Institute for Materials Research
- Tohoku University
- Sendai
- Japan
| | - Elizaveta A. Suturina
- Department of Chemistry
- University of Bath
- Wessex House 1.28
- University of Bath
- Bath BA2 7AY
| | - Mykhaylo Ozerov
- National High Magnetic Field Laboratory
- Florida State University
- Tallahassee
- USA
| | - J. Krzystek
- National High Magnetic Field Laboratory
- Florida State University
- Tallahassee
- USA
| | - Enrique Colacio
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
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24
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Dearle AE, Cutler DJ, Fraser HWL, Sanz S, Lee E, Dey S, Diaz‐Ortega IF, Nichol GS, Nojiri H, Evangelisti M, Rajaraman G, Schnack J, Cronin L, Brechin EK. An [Fe
III
34
] Molecular Metal Oxide. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alice E. Dearle
- EaStCHEM School of ChemistryThe University of Edinburgh David Brewster Road Edinburgh EH93FJ UK
| | - Daniel J. Cutler
- EaStCHEM School of ChemistryThe University of Edinburgh David Brewster Road Edinburgh EH93FJ UK
| | - Hector W. L. Fraser
- EaStCHEM School of ChemistryThe University of Edinburgh David Brewster Road Edinburgh EH93FJ UK
| | - Sergio Sanz
- EaStCHEM School of ChemistryThe University of Edinburgh David Brewster Road Edinburgh EH93FJ UK
| | - Edward Lee
- EaStCHEM School of ChemistryThe University of Edinburgh David Brewster Road Edinburgh EH93FJ UK
- WestCHEM School of ChemistryThe University of Glasgow University Avenue Glasgow G12 8QQ UK
| | - Sourav Dey
- Department of ChemistryIndian Institute of Technology Bombay Mumbai 400076 India
| | | | - Gary S. Nichol
- EaStCHEM School of ChemistryThe University of Edinburgh David Brewster Road Edinburgh EH93FJ UK
| | | | - Marco Evangelisti
- Instituto de Ciencia de Materiales de AragónCSIC-Universidad de Zaragoza 50009 Zaragoza Spain
| | - Gopalan Rajaraman
- Department of ChemistryIndian Institute of Technology Bombay Mumbai 400076 India
| | - Jürgen Schnack
- Fakultät für PhysikUniversitat Bielefeld Postfach 100131 33501 Bielefeld Germany
| | - Leroy Cronin
- WestCHEM School of ChemistryThe University of Glasgow University Avenue Glasgow G12 8QQ UK
| | - Euan K. Brechin
- EaStCHEM School of ChemistryThe University of Edinburgh David Brewster Road Edinburgh EH93FJ UK
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25
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Dearle AE, Cutler DJ, Fraser HWL, Sanz S, Lee E, Dey S, Diaz-Ortega IF, Nichol GS, Nojiri H, Evangelisti M, Rajaraman G, Schnack J, Cronin L, Brechin EK. An [Fe III 34 ] Molecular Metal Oxide. Angew Chem Int Ed Engl 2019; 58:16903-16906. [PMID: 31535459 PMCID: PMC7186828 DOI: 10.1002/anie.201911003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Indexed: 11/11/2022]
Abstract
The dissolution of anhydrous iron bromide in a mixture of pyridine and acetonitrile, in the presence of an organic amine, results in the formation of an [Fe34] metal oxide molecule, structurally characterised by alternate layers of tetrahedral and octahedral FeIII ions connected by oxide and hydroxide ions. The outer shell of the complex is capped by a combination of pyridine molecules and bromide ions. Magnetic data, measured at temperatures as low as 0.4 K and fields up to 35 T, reveal competing antiferromagnetic exchange interactions; DFT calculations showing that the magnitudes of the coupling constants are highly dependent on both the Fe‐O‐Fe angles and Fe−O distances. The simplicity of the synthetic methodology, and the structural similarity between [Fe34], bulk iron oxides, previous FeIII–oxo cages, and polyoxometalates (POMs), hints that much larger molecular FeIII oxides can be made.
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Affiliation(s)
- Alice E Dearle
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH93FJ, UK
| | - Daniel J Cutler
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH93FJ, UK
| | - Hector W L Fraser
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH93FJ, UK
| | - Sergio Sanz
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH93FJ, UK
| | - Edward Lee
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH93FJ, UK.,WestCHEM School of Chemistry, The University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK
| | - Sourav Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | | | - Gary S Nichol
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH93FJ, UK
| | - Hiroyuki Nojiri
- IMR, Tohoku Univ, Katahira 2-1-1, Aobaku, Sendai, 980-8577, Japan
| | - Marco Evangelisti
- Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza, 50009, Zaragoza, Spain
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Jürgen Schnack
- Fakultät für Physik, Universitat Bielefeld, Postfach 100131, 33501, Bielefeld, Germany
| | - Leroy Cronin
- WestCHEM School of Chemistry, The University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK
| | - Euan K Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH93FJ, UK
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26
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Baker ML, Wu SQ, Kang S, Matsuzawa S, Arrio MA, Narumi Y, Kihara T, Nakamura T, Kotani Y, Sato O, Nojiri H. Electron-Transfer Activity in a Cyanide-Bridged Fe42 Nanomagnet. Inorg Chem 2019; 58:10160-10166. [DOI: 10.1021/acs.inorgchem.9b01216] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael L. Baker
- The School of Chemistry, The University of Manchester at Harwell, Didcot OX11 OFA, U.K
- The School of Chemistry, The University of Manchester, Manchester M139PL, U.K
| | - Shu-Qi Wu
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Soonchul Kang
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8527, Japan
| | - Satoshi Matsuzawa
- Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577, Japan
| | - Marie-Anne Arrio
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS, Sorbonne Université, IRD, MNHN, UMR7590, 75252 Paris Cedex 05, France
| | - Yasuo Narumi
- Center of Advanced High Magnetic Field Science, Osaka University, Toyonaka 1-1, Osaka 560-0043, Japan
| | - Takumi Kihara
- Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577, Japan
| | - Tetsuya Nakamura
- Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198, Japan
| | - Yoshinori Kotani
- Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198, Japan
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577, Japan
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27
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Affiliation(s)
- M. Watanabe
- J-PARC Center, JAEA, Ibaraki, Japan. E-mail:
| | - H. Nojiri
- Institute for Materials Research, Tohoku University, Miyagi, Japan. E-mail:
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28
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Tahara T, Suzuki S, Kozaki M, Shiomi D, Sugisaki K, Sato K, Takui T, Miyake Y, Hosokoshi Y, Nojiri H, Okada K. Triplet Diradical-Cation Salts Consisting of the Phenothiazine Radical Cation and a Nitronyl Nitroxide. Chemistry 2019; 25:7201-7209. [PMID: 30924188 DOI: 10.1002/chem.201900513] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Indexed: 11/11/2022]
Abstract
The spin-spin and magnetic properties of two (nitronyl nitroxide)-(di-p-anisylamine-phenothiazine) diradical cation salts, (DAA-PTZ)+ -NN⋅MBr4 - (M=Ga, Fe), have been investigated. These diradical-cation species were prepared by the cross-coupling of iodophenothiazine DAA-PTZ-I with NN-AuPPh3 followed by oxidation with the thianthrenium radical cation (TA+ ⋅MBr4 - ). These salts were found to be highly stable under aerobic conditions. For the GaBr4 salt, large ferromagnetic intramolecular and small antiferromagnetic intermolecular interactions (J1 /kB =+320 K and J2 /kB =-2 K, respectively) were observed. The magnetic property of the Fe3+ salt was analyzed by using a six-spin model assuming identical intramolecular exchange interaction (J3 /kB =+320 K) and the other exchange interactions (J4 /kB =-7 K and J5 /kB =-4 K). A significant color change was observed in the UV/Vis/NIR absorption spectra upon electrochemical oxidation of the doublet DAA-PTZ-NN to the triplet (DAA-PTZ)+ -NN.
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Affiliation(s)
- Takuma Tahara
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka, 558-8585, Japan
| | - Shuichi Suzuki
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka, 558-8585, Japan.,Present address: Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
| | - Masatoshi Kozaki
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka, 558-8585, Japan
| | - Daisuke Shiomi
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka, 558-8585, Japan
| | - Kenji Sugisaki
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka, 558-8585, Japan
| | - Kazunobu Sato
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka, 558-8585, Japan
| | - Takeji Takui
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka, 558-8585, Japan
| | - Yota Miyake
- Department of Physical Science, Osaka Prefecture University, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Yuko Hosokoshi
- Department of Physical Science, Osaka Prefecture University, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Aoba-ku, Sendai Miyagi, 980-8577, Japan
| | - Keiji Okada
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka, 558-8585, Japan.,Osaka City University Advanced Research Institute, for Natural Science and Technology (OCARINA), Sumiyoshi-ku, Osaka, Osaka, 558-8585, Japan
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29
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Zvyagin SA, Graf D, Sakurai T, Kimura S, Nojiri H, Wosnitza J, Ohta H, Ono T, Tanaka H. Pressure-tuning the quantum spin Hamiltonian of the triangular lattice antiferromagnet Cs 2CuCl 4. Nat Commun 2019; 10:1064. [PMID: 30842420 PMCID: PMC6403288 DOI: 10.1038/s41467-019-09071-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 02/13/2019] [Indexed: 11/23/2022] Open
Abstract
Quantum triangular-lattice antiferromagnets are important prototype systems to investigate numerous phenomena of the geometrical frustration in condensed matter. Apart from highly unusual magnetic properties, they possess a rich phase diagram (ranging from an unfrustrated square lattice to a quantum spin liquid), yet to be confirmed experimentally. One major obstacle in this area of research is the lack of materials with appropriate (ideally tuned) magnetic parameters. Using Cs2CuCl4 as a model system, we demonstrate an alternative approach, where, instead of the chemical composition, the spin Hamiltonian is altered by hydrostatic pressure. The approach combines high-pressure electron spin resonance and r.f. susceptibility measurements, allowing us not only to quasi-continuously tune the exchange parameters, but also to accurately monitor them. Our experiments indicate a substantial increase of the exchange coupling ratio from 0.3 to 0.42 at a pressure of 1.8 GPa, revealing a number of emergent field-induced phases. Theoretical studies of quantum magnetism typically assume idealised lattices with freely tunable parameters, which are difficult to realise experimentally. Zvyagin et al. perform challenging measurements at high pressures to tune and to accurately monitor the exchange parameters of a triangular lattice antiferromagnet.
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Affiliation(s)
- S A Zvyagin
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01328, Dresden, Germany.
| | - D Graf
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, 32310, USA
| | - T Sakurai
- Research Facility Center for Science and Technology, Kobe University, Kobe, 657-8501, Japan
| | - S Kimura
- Institute for Materials Research, Tohoku University, Sendai, 980-8578, Japan
| | - H Nojiri
- Institute for Materials Research, Tohoku University, Sendai, 980-8578, Japan
| | - J Wosnitza
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01328, Dresden, Germany.,Institut für Festkörper- und Materialphysik, TU Dresden, 01062, Dresden, Germany
| | - H Ohta
- Molecular Photoscience Research Center, Kobe University, Kobe, 657-8501, Japan
| | - T Ono
- Department of Physical Science, Osaka Prefecture University, Osaka, 599-8531, Japan
| | - H Tanaka
- Department of Physics, Tokyo Institute of Technology, Tokyo, 152-8551, Japan
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30
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Díaz-Ortega IF, Herrera JM, Reyes Carmona Á, Galán-Mascarós JR, Dey S, Nojiri H, Rajaraman G, Colacio E. A Chiral Bipyrimidine-Bridged Dy 2 SMM: A Comparative Experimental and Theoretical Study of the Correlation Between the Distortion of the DyO6N2 Coordination Sphere and the Anisotropy Barrier. Front Chem 2018; 6:537. [PMID: 30467538 PMCID: PMC6236069 DOI: 10.3389/fchem.2018.00537] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 10/16/2018] [Indexed: 11/18/2022] Open
Abstract
Chiral bipyrimidine-bridged dinuclear LnIII complexes of general formula [(μ-bipym){((+)-tfacam)3Ln}2] and [(μ-bipym){((-)-tfacam)3Ln}2], have been prepared from the assembly of Ln(AcO)3·nH2O (LnIII = Dy, Gd), (+)/(−)-3-(trifluoroacetyl)camphor enantiopure ligands ((+)/(-)-Htfacam) and bipyrimidine (bipym). The structure and chirality of these complexes have been supported by single-crystal X-Ray diffraction and circular dichroism. The study of the magnetic properties of the GdIII complexes revealed a very weak antiferromagnetic interaction between the GdIII ions through the bipyrimidine bridging ligand. Ab initio CASSCF calculations indicated that the ground Kramers doublet (KD) of both DyIII centers is almost purely axial with the anisotropy axis located close to the two tfacam−ligands at opposite sides of each DyIIIatom, which create an axial crystal field. In keeping with this, ac dynamic measurements indicated slow relaxation of the magnetization at zero field with Ueff = 55.1 K, a pre-exponential factor of τo = 2.17·10−6 s and τQTM = 8 μs. When an optimal dc field of 0.1 T is applied, QTM is quenched and Ueff increases to 75.9 K with τo = 6.16 × 10−7 s. The DyN2O8 coordination spheres and SMM properties of [(μ-bipym){((+)-tfacam)3Ln}2] and their achiral [(Dy(β-diketonate)3)2(μ-bpym)]analogous have been compared and a magneto-structural correlation has been established, which has been supported by theoretical calculations. In contrast to the GdIII compounds, the magnetic exchange interaction between the DyIII ions has been calculated to be very weak and, generally, ferromagnetic in nature. Relaxation mechanisms for [(μ-bipym){((+)-tfacam)3Ln}2] and previously reported analogous have been proposed from ab initio calculations. As the magnetic exchange interaction found to be very weak, the observed magnetization blockade in these systems are primarily dictated by the single ion anisotropy of DyIII ions.
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Affiliation(s)
- Ismael F Díaz-Ortega
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Granada, Spain
| | - Juan Manuel Herrera
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Granada, Spain
| | - Álvaro Reyes Carmona
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology, Tarragona, Spain
| | - José Ramón Galán-Mascarós
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology, Tarragona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Sourav Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai, Japan
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Granada, Spain
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31
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Sakurai T, Kimura S, Kimata M, Nojiri H, Awaji S, Okubo S, Ohta H, Uwatoko Y, Kudo K, Koike Y. Development and application of 2.5 GPa-25 T high-pressure high-field electron spin resonance system using a cryogen-free superconducting magnet. J Magn Reson 2018; 296:1-4. [PMID: 30165264 DOI: 10.1016/j.jmr.2018.08.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/20/2018] [Accepted: 08/21/2018] [Indexed: 06/08/2023]
Abstract
We have developed a high-pressure electron spin resonance probe and successfully installed into the world's highest-field cryogen-free superconducting magnet having a maximum central field of 24.6 T. The high pressure of 2.5 GPa is achieved by the specially designed piston-cylinder pressure cell using THz-wave-transparent components. In the first application of this high-pressure high-field ESR system, we observed that the orthogonal dimer spin system SrCu2(BO3)2 undergoes a quantum phase transition from the dimer singlet ground to the plaquette singlet ground states.
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Affiliation(s)
- T Sakurai
- Research Facility Center for Science and Technology, Kobe University, Nada, Kobe 657-8501, Japan.
| | - S Kimura
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - M Kimata
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - H Nojiri
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - S Awaji
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - S Okubo
- Molecular Photoscience Research Center, Kobe University, Nada, Kobe 657-8501, Japan
| | - H Ohta
- Molecular Photoscience Research Center, Kobe University, Nada, Kobe 657-8501, Japan
| | - Y Uwatoko
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
| | - K Kudo
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - Y Koike
- Department of Applied Physics, Tohoku University, Sendai 980-8579, Japan
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32
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Izuogu DC, Yoshida T, Zhang H, Cosquer G, Katoh K, Ogata S, Hasegawa M, Nojiri H, Damjanović M, Wernsdorfer W, Uruga T, Ina T, Breedlove BK, Yamashita M. Slow Magnetic Relaxation in a Palladium-Gadolinium Complex Induced by Electron Density Donation from the Palladium Ion. Chemistry 2018. [DOI: 10.1002/chem.201802702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- David C. Izuogu
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
- Department of Pure & Industrial Chemistry; University of Nigeria; Nsukka 410001 Nigeria
- Department of Chemistry; University of Cambridge; Lensfield Rd Cambridge CB2 1EW UK
| | - Takefumi Yoshida
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
- Electronic Functional Macromolecules Group; National Institute for Materials Science; 1-1 Namiki Tsukuba Japan
| | - Haitao Zhang
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Goulven Cosquer
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Shuhei Ogata
- Department of Chemistry and Biological Science; College of Science and Engineering; Aoyama-Gakuin University, Fuchinobe; Chuo-ku, Sagamihara Kanagawa 252-5258 Japan
| | - Miki Hasegawa
- Department of Chemistry and Biological Science; College of Science and Engineering; Aoyama-Gakuin University, Fuchinobe; Chuo-ku, Sagamihara Kanagawa 252-5258 Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research; Tohoku University; Sendai Miyagi 980-8577 Japan
| | - Marko Damjanović
- Physikalisches Institut and Institute of Nanotechnology; Karlsruhe Institute of Technology; Wolfgang-Gaede-Strasse 1 76131 Karlsruhe Germany
| | - Wolfgang Wernsdorfer
- Physikalisches Institut and Institute of Nanotechnology; Karlsruhe Institute of Technology; Wolfgang-Gaede-Strasse 1 76131 Karlsruhe Germany
- CNRS and Université Grenoble Alpes; Institut Néel; 38042 Grenoble France
| | - Tomoya Uruga
- Research & Utilization Division; Japan Synchrotron Radiation Research Institute (JASRI/SPring-8); 1-1-1 Kouto Sayo Hyogo 679-5198 Japan
| | - Toshiaki Ina
- Research & Utilization Division; Japan Synchrotron Radiation Research Institute (JASRI/SPring-8); 1-1-1 Kouto Sayo Hyogo 679-5198 Japan
| | - Brian K. Breedlove
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
- WPI-Advanced Institute for Materials Research; Tohoku University; 2-1-1 Katahira Sendai 980-8577 Japan
- School of Materials Science and Engineering; Nankai University; Tianjin 300350 China
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33
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Izuogu DC, Yoshida T, Zhang H, Cosquer G, Katoh K, Ogata S, Hasegawa M, Nojiri H, Damjanović M, Wernsdorfer W, Uruga T, Ina T, Breedlove BK, Yamashita M. Slow Magnetic Relaxation in a Palladium-Gadolinium Complex Induced by Electron Density Donation from the Palladium Ion. Chemistry 2018; 24:9285-9294. [PMID: 29663534 DOI: 10.1002/chem.201800699] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 04/12/2018] [Indexed: 11/06/2022]
Abstract
Incorporating palladium in the first coordination sphere of acetato-bridged lanthanoid complexes, [Pd2 Ln2 (H2 O)2 (AcO)10 ]⋅2 AcOH (Ln=Gd (1), Y (2), Gd0.4 Y1.6 (3), Eu (4)), led to significant bonding interactions between the palladium and the lanthanoid ions, which were demonstrated by experimental and theoretical methods. We found that electron density was donated from the d8 Pd2+ ion to Gd3+ ion in 1 and 3, leading to the observed slow magnetic relaxation by using local orbital locator (LOL) and X-ray absorption near-edge structure (XANES) analysis. Field-induced dual slow magnetic relaxation was observed for 1 up to 20 K. Complex 3 and frozen aqueous and acetonitrile solutions of 1 showed only one relaxation peak, which confirms the role of intermolecular dipolar interactions in slowing the magnetic relaxation of 1. The slow magnetic relaxation occurred through a combination of Orbach and Direct processes with the highest pre-exponential factor (τo =0.06 s) reported so far for a gadolinium complex exhibiting slow magnetic relaxation. The results revealed that transition metal-lanthanoid (TM-Ln) axial interactions indeed could lead to new physical properties by affecting both the electronic and magnetic states of the compounds.
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Affiliation(s)
- David C Izuogu
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan.,Department of Pure & Industrial Chemistry, University of Nigeria, Nsukka, 410001, Nigeria.,Department of Chemistry, University of Cambridge, Lensfield Rd., Cambridge, CB2 1EW, UK
| | - Takefumi Yoshida
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan.,Electronic Functional Macromolecules Group, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan
| | - Haitao Zhang
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Goulven Cosquer
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Shuhei Ogata
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama-Gakuin University, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5258, Japan
| | - Miki Hasegawa
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama-Gakuin University, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5258, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai, Miyagi, 980-8577, Japan
| | - Marko Damjanović
- Physikalisches Institut and Institute of Nanotechnology, Karlsruhe Institute of Technology, Wolfgang-Gaede-Strasse 1, 76131, Karlsruhe, Germany
| | - Wolfgang Wernsdorfer
- Physikalisches Institut and Institute of Nanotechnology, Karlsruhe Institute of Technology, Wolfgang-Gaede-Strasse 1, 76131, Karlsruhe, Germany.,CNRS and Université Grenoble Alpes, Institut Néel, 38042, Grenoble, France
| | - Tomoya Uruga
- Research & Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Toshiaki Ina
- Research & Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Brian K Breedlove
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan.,WPI-Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai, 980-8577, Japan.,School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
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34
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Izuogu DC, Yoshida T, Zhang H, Cosquer G, Katoh K, Ogata S, Hasegawa M, Nojiri H, Damjanović M, Wernsdorfer W, Uruga T, Ina T, Breedlove BK, Yamashita M. Front Cover: Slow Magnetic Relaxation in a Palladium-Gadolinium Complex Induced by Electron Density Donation from the Palladium Ion (Chem. Eur. J. 37/2018). Chemistry 2018. [DOI: 10.1002/chem.201802701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- David C. Izuogu
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
- Department of Pure & Industrial Chemistry; University of Nigeria; Nsukka 410001 Nigeria
- Department of Chemistry; University of Cambridge; Lensfield Rd. Cambridge CB2 1EW UK
| | - Takefumi Yoshida
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
- Electronic Functional Macromolecules Group; National Institute for Materials Science; 1-1 Namiki Tsukuba Japan
| | - Haitao Zhang
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Goulven Cosquer
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Shuhei Ogata
- Department of Chemistry and Biological Science; College of Science and Engineering; Aoyama-Gakuin University, Fuchinobe; Chuo-ku, Sagamihara Kanagawa 252-5258 Japan
| | - Miki Hasegawa
- Department of Chemistry and Biological Science; College of Science and Engineering; Aoyama-Gakuin University, Fuchinobe; Chuo-ku, Sagamihara Kanagawa 252-5258 Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research; Tohoku University; Sendai Miyagi 980-8577 Japan
| | - Marko Damjanović
- Physikalisches Institut and Institute of Nanotechnology; Karlsruhe Institute of Technology; Wolfgang-Gaede-Strasse 1 76131 Karlsruhe Germany
| | - Wolfgang Wernsdorfer
- Physikalisches Institut and Institute of Nanotechnology; Karlsruhe Institute of Technology; Wolfgang-Gaede-Strasse 1 76131 Karlsruhe Germany
- CNRS and Université Grenoble Alpes; Institut Néel; 38042 Grenoble France
| | - Tomoya Uruga
- Research & Utilization Division; Japan Synchrotron Radiation Research Institute (JASRI/SPring-8); 1-1-1 Kouto Sayo Hyogo 679-5198 Japan
| | - Toshiaki Ina
- Research & Utilization Division; Japan Synchrotron Radiation Research Institute (JASRI/SPring-8); 1-1-1 Kouto Sayo Hyogo 679-5198 Japan
| | - Brian K. Breedlove
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science; Tohoku University; 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
- WPI-Advanced Institute for Materials Research; Tohoku University; 2-1-1 Katahira Sendai 980-8577 Japan
- School of Materials Science and Engineering; Nankai University; Tianjin 300350 China
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35
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Díaz-Ortega IF, Herrera JM, Aravena D, Ruiz E, Gupta T, Rajaraman G, Nojiri H, Colacio E. Designing a Dy2 Single-Molecule Magnet with Two Well-Differentiated Relaxation Processes by Using a Nonsymmetric Bis-bidentate Bipyrimidine-N-Oxide Ligand: A Comparison with Mononuclear Counterparts. Inorg Chem 2018; 57:6362-6375. [DOI: 10.1021/acs.inorgchem.8b00427] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ismael F. Díaz-Ortega
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain
| | - Juan Manuel Herrera
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain
| | - Daniel Aravena
- Departamento de Química de los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, Correo 33, Santiago, Chile
| | - Eliseo Ruiz
- Departament de Química Inorgànica and Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Tulika Gupta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - H. Nojiri
- Institute for Materials Research, Tohoku University, Katahira, Sendai, 980-8577, Japan
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain
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36
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Ge N, Zhai YQ, Deng YF, Ding YS, Wu T, Wang ZX, Ouyang Z, Nojiri H, Zheng YZ. Rationalization of single-molecule magnet behavior in a three-coordinate Fe(iii) complex with a high-spin state (S = 5/2). Inorg Chem Front 2018. [DOI: 10.1039/c8qi00701b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A trigonal-planar Fe(iii) complex Fe[N(SiMe3)2]3 with a high spin state (S = 5/2) was investigated by magnetic and HF-EPR measurements, exhibiting distinct dynamic magnetic behaviour.
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Affiliation(s)
- Ning Ge
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory of Mechanical Behavior for Materials
- MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter
- Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of Science
- Xi'an Jiaotong University
| | - Yuan-Qi Zhai
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory of Mechanical Behavior for Materials
- MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter
- Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of Science
- Xi'an Jiaotong University
| | - Yi-Fei Deng
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory of Mechanical Behavior for Materials
- MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter
- Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of Science
- Xi'an Jiaotong University
| | - You-Song Ding
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory of Mechanical Behavior for Materials
- MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter
- Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of Science
- Xi'an Jiaotong University
| | - Tao Wu
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory of Mechanical Behavior for Materials
- MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter
- Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of Science
- Xi'an Jiaotong University
| | - Zhen-Xing Wang
- National High Magnetic Field Center
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Zhongwen Ouyang
- National High Magnetic Field Center
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Hiroyuki Nojiri
- Institute for Materials Research (IMR)
- Tohoku University
- Tohoku 980-8577
- Japan
| | - Yan-Zhen Zheng
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory of Mechanical Behavior for Materials
- MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter
- Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of Science
- Xi'an Jiaotong University
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37
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Nojiri H, Kihara T. Neutron diffraction experiments in pulsed magnetic fields. Acta Crystallogr A Found Adv 2017. [DOI: 10.1107/s2053273317081475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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38
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Qin L, Singleton J, Chen WP, Nojiri H, Engelhardt L, Winpenny REP, Zheng YZ. Quantum Monte Carlo Simulations and High-Field Magnetization Studies of Antiferromagnetic Interactions in a Giant Hetero-Spin Ring. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709650] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Lei Qin
- Frontier Institute of Science and Technology (FIST); Xi'an Jiaotong University; Xi'an 710054 China
| | - Jared Singleton
- Department of Physics and Astronomy; Francis Marion University; Florence SC 29502 USA
| | - Wei-Peng Chen
- Frontier Institute of Science and Technology (FIST); Xi'an Jiaotong University; Xi'an 710054 China
| | - Hiroyuki Nojiri
- Institute of Materials Research (IMR); Tohoku University, Katahira; Sendai 980-8577 Japan
| | - Larry Engelhardt
- Department of Physics and Astronomy; Francis Marion University; Florence SC 29502 USA
| | - Richard E. P. Winpenny
- Department of Chemistry and Photon Science Institute; The University of Manchester; Manchester M13 9PL UK
| | - Yan-Zhen Zheng
- Frontier Institute of Science and Technology (FIST); Xi'an Jiaotong University; Xi'an 710054 China
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39
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Qin L, Singleton J, Chen WP, Nojiri H, Engelhardt L, Winpenny REP, Zheng YZ. Quantum Monte Carlo Simulations and High-Field Magnetization Studies of Antiferromagnetic Interactions in a Giant Hetero-Spin Ring. Angew Chem Int Ed Engl 2017; 56:16571-16574. [DOI: 10.1002/anie.201709650] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Lei Qin
- Frontier Institute of Science and Technology (FIST); Xi'an Jiaotong University; Xi'an 710054 China
| | - Jared Singleton
- Department of Physics and Astronomy; Francis Marion University; Florence SC 29502 USA
| | - Wei-Peng Chen
- Frontier Institute of Science and Technology (FIST); Xi'an Jiaotong University; Xi'an 710054 China
| | - Hiroyuki Nojiri
- Institute of Materials Research (IMR); Tohoku University, Katahira; Sendai 980-8577 Japan
| | - Larry Engelhardt
- Department of Physics and Astronomy; Francis Marion University; Florence SC 29502 USA
| | - Richard E. P. Winpenny
- Department of Chemistry and Photon Science Institute; The University of Manchester; Manchester M13 9PL UK
| | - Yan-Zhen Zheng
- Frontier Institute of Science and Technology (FIST); Xi'an Jiaotong University; Xi'an 710054 China
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40
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Qin L, Zhou GJ, Yu YZ, Nojiri H, Schröder C, Winpenny REP, Zheng YZ. Topological Self-Assembly of Highly Symmetric Lanthanide Clusters: A Magnetic Study of Exchange-Coupling “Fingerprints” in Giant Gadolinium(III) Cages. J Am Chem Soc 2017; 139:16405-16411. [DOI: 10.1021/jacs.7b09996] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lei Qin
- Frontier
Institute of Science and Technology (FIST), Xi’an Jiaotong University, Xi’an 710054, People’s Republic of China
| | - Guo-Jun Zhou
- Frontier
Institute of Science and Technology (FIST), Xi’an Jiaotong University, Xi’an 710054, People’s Republic of China
| | - You-Zhu Yu
- Frontier
Institute of Science and Technology (FIST), Xi’an Jiaotong University, Xi’an 710054, People’s Republic of China
| | - Hiroyuki Nojiri
- Institute
for Materials Research (IMR), Tohoku University, Tohoku 980-8577, Japan
| | - Christian Schröder
- Bielefeld
Institute for Applied Materials Research, Bielefeld University of Applied Sciences, D-33619 Bielefeld, Germany
| | - Richard E. P. Winpenny
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Yan-Zhen Zheng
- Frontier
Institute of Science and Technology (FIST), Xi’an Jiaotong University, Xi’an 710054, People’s Republic of China
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41
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Grafe HJ, Nishimoto S, Iakovleva M, Vavilova E, Spillecke L, Alfonsov A, Sturza MI, Wurmehl S, Nojiri H, Rosner H, Richter J, Rößler UK, Drechsler SL, Kataev V, Büchner B. Signatures of a magnetic field-induced unconventional nematic liquid in the frustrated and anisotropic spin-chain cuprate LiCuSbO 4. Sci Rep 2017; 7:6720. [PMID: 28751668 PMCID: PMC5532373 DOI: 10.1038/s41598-017-06525-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 06/14/2017] [Indexed: 11/09/2022] Open
Abstract
Modern theories of quantum magnetism predict exotic multipolar states in weakly interacting strongly frustrated spin-1/2 Heisenberg chains with ferromagnetic nearest neighbor (NN) inchain exchange in high magnetic fields. Experimentally these states remained elusive so far. Here we report strong indications of a magnetic field-induced nematic liquid arising above a field of ~13 T in the edge-sharing chain cuprate LiSbCuO4 ≡ LiCuSbO4. This interpretation is based on the observation of a field induced spin-gap in the measurements of the 7Li NMR spin relaxation rate T 1-1 as well as a contrasting field-dependent power-law behavior of T 1-1 vs. T and is further supported by static magnetization and ESR data. An underlying theoretical microscopic approach favoring a nematic scenario is based essentially on the NN XYZ exchange anisotropy within a model for frustrated spin-1/2 chains and is investigated by the DMRG technique. The employed exchange parameters are justified qualitatively by electronic structure calculations for LiCuSbO4.
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Affiliation(s)
- H-J Grafe
- Leibniz Institute for Solid State and Materials Research IFW-Dresden, D-01171, Dresden, Germany
| | - S Nishimoto
- Leibniz Institute for Solid State and Materials Research IFW-Dresden, D-01171, Dresden, Germany.,Institute for Theoretical Physics, Technical University Dresden, D-01069, Dresden, Germany
| | - M Iakovleva
- Leibniz Institute for Solid State and Materials Research IFW-Dresden, D-01171, Dresden, Germany.,Zavoisky Physical-Technical Institute of the Russian Academy of Sciences, 420029, Kazan, Russia
| | - E Vavilova
- Leibniz Institute for Solid State and Materials Research IFW-Dresden, D-01171, Dresden, Germany.,Zavoisky Physical-Technical Institute of the Russian Academy of Sciences, 420029, Kazan, Russia
| | - L Spillecke
- Leibniz Institute for Solid State and Materials Research IFW-Dresden, D-01171, Dresden, Germany.,Institute for Solid State Physics, Technical University Dresden, D-01069, Dresden, Germany
| | - A Alfonsov
- Leibniz Institute for Solid State and Materials Research IFW-Dresden, D-01171, Dresden, Germany
| | - M-I Sturza
- Leibniz Institute for Solid State and Materials Research IFW-Dresden, D-01171, Dresden, Germany
| | - S Wurmehl
- Leibniz Institute for Solid State and Materials Research IFW-Dresden, D-01171, Dresden, Germany
| | - H Nojiri
- Institute of Materials Research, Tohoku University, 980-8577, Sendai, Japan
| | - H Rosner
- Max-Planck-Institute for Chemical Physics of Solids, Dresden, Germany
| | - J Richter
- Universität Magdeburg, Institut für Theoretische Physik, Magdeburg, Germany
| | - U K Rößler
- Leibniz Institute for Solid State and Materials Research IFW-Dresden, D-01171, Dresden, Germany
| | - S-L Drechsler
- Leibniz Institute for Solid State and Materials Research IFW-Dresden, D-01171, Dresden, Germany
| | - V Kataev
- Leibniz Institute for Solid State and Materials Research IFW-Dresden, D-01171, Dresden, Germany.
| | - B Büchner
- Leibniz Institute for Solid State and Materials Research IFW-Dresden, D-01171, Dresden, Germany.,Institute for Solid State Physics, Technical University Dresden, D-01069, Dresden, Germany
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42
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Zhang M, Yang T, Wang Z, Ma XF, Zhang Y, Greer SM, Stoian SA, Ouyang ZW, Nojiri H, Kurmoo M, Zeng MH. Chemical reaction within a compact non-porous crystal containing molecular clusters without the loss of crystallinity. Chem Sci 2017; 8:5356-5361. [PMID: 28970914 PMCID: PMC5609145 DOI: 10.1039/c7sc01041a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 06/16/2017] [Indexed: 11/23/2022] Open
Abstract
A yellow crystal with {FeII4O4} cubes is modified to a black crystal with {FeIII4O4} cubes via a SC–SC transformation.
The very rare occurrence of a gas–solid chemical reaction has been found to take place on a molecule within a compact non-porous crystal without destroying its long-range structural order and retaining similar crystal structures when yellow crystals of FeII4(mbm)4Cl4(MeOH)4 were exposed to air to give black [FeIII4(mbm)4Cl4(OH)4]·2H2O. The latter cannot be synthesised directly. The original cluster underwent an exchange of methanol to hydroxide, an oxidation of Fe(ii) to Fe(iii), a change in stereochemistry and hydration while the packing and space-group remained unaltered.
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Affiliation(s)
- Ming Zhang
- Department of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , Guilin , 541004 , P. R. China
| | - Tao Yang
- College of Chemistry and Chemical Engineering , Hubei University , Wuhan , 430062 , P. R. China . .,Department of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , Guilin , 541004 , P. R. China
| | - Zhenxing Wang
- Wuhan National High Magnetic Field Center & School of Physics , Huazhong University of Science and Technology , Wuhan , 430074 , P. R. China
| | - Xiong-Feng Ma
- Department of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , Guilin , 541004 , P. R. China
| | - Yuexing Zhang
- College of Chemistry and Chemical Engineering , Hubei University , Wuhan , 430062 , P. R. China .
| | - Samuel M Greer
- Department of Chemistry and Biochemistry , Florida State University , Tallahassee , Florida 32306 , USA.,National High Magnetic Field Laboratory , Florida State University , Tallahassee , Florida 32310 , USA
| | - Sebastian A Stoian
- Department of Chemistry and Biochemistry , Florida State University , Tallahassee , Florida 32306 , USA.,National High Magnetic Field Laboratory , Florida State University , Tallahassee , Florida 32310 , USA
| | - Zhong-Wen Ouyang
- Wuhan National High Magnetic Field Center & School of Physics , Huazhong University of Science and Technology , Wuhan , 430074 , P. R. China
| | - Hiroyuki Nojiri
- Institute for Materials Research , Tohoku University , Katahira 2-1-1 , Sendai 980-8577 , Japan
| | - Mohamedally Kurmoo
- Institut de Chimie de Strasbourg , CNRS-UMR 7177 , Université de Strasbourg , 4 rue Blaise Pascal , 67070 Strasbourg , France .
| | - Ming-Hua Zeng
- College of Chemistry and Chemical Engineering , Hubei University , Wuhan , 430062 , P. R. China . .,Department of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , Guilin , 541004 , P. R. China
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43
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Díaz-Ortega IF, Herrera JM, Gupta T, Rajaraman G, Nojiri H, Colacio E. Design of a Family of Ln3 Triangles with the HAT Ligand (1,4,5,8,9,12-Hexaazatriphenylene): Single-Molecule Magnetism. Inorg Chem 2017; 56:5594-5610. [DOI: 10.1021/acs.inorgchem.6b03031] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Ismael F. Díaz-Ortega
- Departamento de Química Inorgánica, Facultad
de Ciencias, Universidad de Granada, Avda. Fuentenueva s/n, 18071 Granada, Spain
| | - Juan Manuel Herrera
- Departamento de Química Inorgánica, Facultad
de Ciencias, Universidad de Granada, Avda. Fuentenueva s/n, 18071 Granada, Spain
| | - Tulika Gupta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577, Japan
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad
de Ciencias, Universidad de Granada, Avda. Fuentenueva s/n, 18071 Granada, Spain
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44
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Kanetomo T, Kihara T, Miyake A, Matsuo A, Tokunaga M, Kindo K, Nojiri H, Ishida T. Giant Exchange Coupling Evidenced with a Magnetization Jump at 52 T for a Gadolinium-Nitroxide Chelate. Inorg Chem 2017; 56:3310-3314. [PMID: 28281348 DOI: 10.1021/acs.inorgchem.6b02685] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Gd-radical complex [GdIII(hfac)3(6bpyNO)] (6bpyNO = 2,2'-bipyridin-6-yl tert-butyl nitroxide; Hhfac = 1,1,1,5,5,5-hexafluoropentane-2,4-dione) showed a magnetization jump at 52 T observed in a pulsed-field facility, corresponding to an exchange coupling constant of -17.4 K. Furthermore, hysteretic behavior due to a relatively slow magnetization reversal was recorded around 2 T. From the high-frequency EPR study, the exchange coupling between Gd and radical spins accompanies an anisotropic character, which is responsible for both the broad jump and the slow magnetization reversal.
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Affiliation(s)
- Takuya Kanetomo
- Department of Engineering Science, The University of Electro-Communications , Chofu, Tokyo 182-8585, Japan
| | - Takumi Kihara
- Institute for Materials Research, Tohoku University , Sendai, Miyagi 980-8577, Japan
| | - Atsushi Miyake
- Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan
| | - Akira Matsuo
- Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan
| | - Masashi Tokunaga
- Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan
| | - Koichi Kindo
- Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University , Sendai, Miyagi 980-8577, Japan
| | - Takayuki Ishida
- Department of Engineering Science, The University of Electro-Communications , Chofu, Tokyo 182-8585, Japan
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45
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Yoshida T, Cosquer G, Izuogu DC, Ohtsu H, Kawano M, Lan Y, Wernsdorfer W, Nojiri H, Breedlove BK, Yamashita M. Field-Induced Slow Magnetic Relaxation of GdIII
Complex with a Pt−Gd Heterometallic Bond. Chemistry 2017; 23:4551-4556. [DOI: 10.1002/chem.201700886] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Takefumi Yoshida
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aza-aoba, Aramaki Sendai 980-8578 Japan
- WPI-Advanced Institute for Materials Research; Tohoku University; 2-1-1 Katahira Sendai 980-8577 Japan
| | - Goulven Cosquer
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aza-aoba, Aramaki Sendai 980-8578 Japan
- WPI-Advanced Institute for Materials Research; Tohoku University; 2-1-1 Katahira Sendai 980-8577 Japan
| | - David Chukwuma Izuogu
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aza-aoba, Aramaki Sendai 980-8578 Japan
- WPI-Advanced Institute for Materials Research; Tohoku University; 2-1-1 Katahira Sendai 980-8577 Japan
| | - Hiroyoshi Ohtsu
- Department of Chemistry; Graduate School of Science; Tokyo Institute of Technology; 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Masaki Kawano
- Department of Chemistry; Graduate School of Science; Tokyo Institute of Technology; 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Yanhua Lan
- Laboratory Louis Nèel; CNRS, BP 166; 38042 Grenoble Cedex 9 France
| | | | - Hiroyuki Nojiri
- Institute for Materials Research; Tohoku University; Sendai, Miyagi 980-8577 Japan
| | - Brian K. Breedlove
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aza-aoba, Aramaki Sendai 980-8578 Japan
- WPI-Advanced Institute for Materials Research; Tohoku University; 2-1-1 Katahira Sendai 980-8577 Japan
| | - Masahiro Yamashita
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aza-aoba, Aramaki Sendai 980-8578 Japan
- WPI-Advanced Institute for Materials Research; Tohoku University; 2-1-1 Katahira Sendai 980-8577 Japan
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46
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Inada T, Yamazaki T, Namba T, Asai S, Kobayashi T, Tamasaku K, Tanaka Y, Inubushi Y, Sawada K, Yabashi M, Ishikawa T, Matsuo A, Kawaguchi K, Kindo K, Nojiri H. Search for Two-Photon Interaction with Axionlike Particles Using High-Repetition Pulsed Magnets and Synchrotron X Rays. Phys Rev Lett 2017; 118:071803. [PMID: 28256869 DOI: 10.1103/physrevlett.118.071803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Indexed: 06/06/2023]
Abstract
We report on new results of a search for a two-photon interaction with axionlike particles (ALPs). The experiment is carried out at a synchrotron radiation facility using a "light shining through a wall (LSW)" technique. For this purpose, we develop a novel pulsed-magnet system, composed of multiple racetrack magnets and a transportable power supply. It produces fields of about 10 T over 0.8 m with a high repetition rate of 0.2 Hz and yields a new method of probing a vacuum with high intensity fields. The data obtained with a total of 27 676 pulses provide a limit on the ALP-two-photon coupling constant that is more stringent by a factor of 5.2 compared to a previous x-ray LSW limit for the ALP mass ≲0.1 eV.
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Affiliation(s)
- T Inada
- International Center for Elementary Particle Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - T Yamazaki
- International Center for Elementary Particle Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - T Namba
- International Center for Elementary Particle Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - S Asai
- Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - T Kobayashi
- International Center for Elementary Particle Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - K Tamasaku
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Y Tanaka
- Graduate School of Material Science, University of Hyogo, Kamigori, Hyogo 678-1297, Japan
| | - Y Inubushi
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - K Sawada
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - M Yabashi
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - T Ishikawa
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - A Matsuo
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8581, Japan
| | - K Kawaguchi
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8581, Japan
| | - K Kindo
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8581, Japan
| | - H Nojiri
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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47
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Noe GT, Katayama I, Katsutani F, Allred JJ, Horowitz JA, Sullivan DM, Zhang Q, Sekiguchi F, Woods GL, Hoffmann MC, Nojiri H, Takeda J, Kono J. Single-shot terahertz time-domain spectroscopy in pulsed high magnetic fields. Opt Express 2016; 24:30328-30337. [PMID: 28059309 DOI: 10.1364/oe.24.030328] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We have developed a single-shot terahertz time-domain spectrometer to perform optical-pump/terahertz-probe experiments in pulsed, high magnetic fields up to 30 T. The single-shot detection scheme for measuring a terahertz waveform incorporates a reflective echelon to create time-delayed beamlets across the intensity profile of the optical gate beam before it spatially and temporally overlaps with the terahertz radiation in a ZnTe detection crystal. After imaging the gate beam onto a camera, we can retrieve the terahertz time-domain waveform by analyzing the resulting image. To demonstrate the utility of our technique, we measured cyclotron resonance absorption of optically excited carriers in the terahertz frequency range in intrinsic silicon at high magnetic fields, with results that agree well with published values.
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48
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Yao Z, Wu S, Kitagawa Y, Su S, Huang Y, Li G, Ni Z, Nojiri H, Shiota Y, Yoshizawa K, Kang S, Kanegawa S, Sato O. Anisotropic Change in the Magnetic Susceptibility of a Dynamic Single Crystal of a Cobalt(II) Complex. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606165] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zi‐Shuo Yao
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Shu‐Qi Wu
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Yasutaka Kitagawa
- Division of Chemical Engineering Department of Materials Engineering Science Graduate School of Engineering Science Osaka University 1–3, Machikaneyama, Toyonaka Osaka 560–8531 Japan
| | - Sheng‐Qun Su
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - You‐Gui Huang
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Guo‐Ling Li
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Zhong‐Hai Ni
- School of Chemical Engineering and Technology China University of Mining and Technology Xuzhou 221116 P.R. China
| | - Hiroyuki Nojiri
- Institute for Materials Research Tohoku University Katahira 2-1-1 Sendai 980–8577 Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Soonchul Kang
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Shinji Kanegawa
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
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49
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Yao Z, Wu S, Kitagawa Y, Su S, Huang Y, Li G, Ni Z, Nojiri H, Shiota Y, Yoshizawa K, Kang S, Kanegawa S, Sato O. Anisotropic Change in the Magnetic Susceptibility of a Dynamic Single Crystal of a Cobalt(II) Complex. Angew Chem Int Ed Engl 2016; 56:717-721. [DOI: 10.1002/anie.201606165] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Zi‐Shuo Yao
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Shu‐Qi Wu
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Yasutaka Kitagawa
- Division of Chemical Engineering Department of Materials Engineering Science Graduate School of Engineering Science Osaka University 1–3, Machikaneyama, Toyonaka Osaka 560–8531 Japan
| | - Sheng‐Qun Su
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - You‐Gui Huang
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Guo‐Ling Li
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Zhong‐Hai Ni
- School of Chemical Engineering and Technology China University of Mining and Technology Xuzhou 221116 P.R. China
| | - Hiroyuki Nojiri
- Institute for Materials Research Tohoku University Katahira 2-1-1 Sendai 980–8577 Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Soonchul Kang
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Shinji Kanegawa
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering and IRCCS Kyushu University 744 Motooka Nishi-ku 819-0395 Fukuoka Japan
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50
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Knafo W, Duc F, Bourdarot F, Kuwahara K, Nojiri H, Aoki D, Billette J, Frings P, Tonon X, Lelièvre-Berna E, Flouquet J, Regnault LP. Field-induced spin-density wave beyond hidden order in URu 2Si 2. Nat Commun 2016; 7:13075. [PMID: 27762260 PMCID: PMC5080431 DOI: 10.1038/ncomms13075] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Accepted: 08/31/2016] [Indexed: 11/09/2022] Open
Abstract
URu2Si2 is one of the most enigmatic strongly correlated electron systems and offers a fertile testing ground for new concepts in condensed matter science. In spite of >30 years of intense research, no consensus on the order parameter of its low-temperature hidden-order phase exists. A strong magnetic field transforms the hidden order into magnetically ordered phases, whose order parameter has also been defying experimental observation. Here, thanks to neutron diffraction under pulsed magnetic fields up to 40 T, we identify the field-induced phases of URu2Si2 as a spin-density-wave state. The transition to the spin-density wave represents a unique touchstone for understanding the hidden-order phase. An intimate relationship between this magnetic structure, the magnetic fluctuations and the Fermi surface is emphasized, calling for dedicated band-structure calculations. The strongly-correlated electron system URu2Si2 possesses a hidden-order phase whose order parameter remains unidentified. Here, the authors demonstrate the development of spin-density-wave phases in URu2Si2 under high magnetic fields, providing a potential in-road to understanding this system.
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Affiliation(s)
- W Knafo
- Laboratoire National des Champs Magnétiques Intenses, UPR 3228, CNRS-UPS-INSA-UGA, 143 Avenue de Rangueil, 31400 Toulouse, France
| | - F Duc
- Laboratoire National des Champs Magnétiques Intenses, UPR 3228, CNRS-UPS-INSA-UGA, 143 Avenue de Rangueil, 31400 Toulouse, France
| | - F Bourdarot
- Service de Modélisation et d'Exploration des Matériaux, Université Grenoble Alpes et Commissariat á l'Energie Atomique, INAC, 17 rue des Martyrs, 38054 Grenoble, France
| | - K Kuwahara
- Institute of Quantum Beam Science, Ibaraki University, Mito 310-8512, Japan
| | - H Nojiri
- Institute for Materials Research, Tohoku University, Sendai 980-8578, Japan
| | - D Aoki
- Institute for Materials Research, Tohoku University, Ibaraki 311-1313, Japan.,Service Photonique, Electronique et Ingénierie Quantiques, Université Grenoble Alpes et Commissariat à l'Energie Atomique, INAC, 17 rue des Martyrs, 38054 Grenoble, France
| | - J Billette
- Laboratoire National des Champs Magnétiques Intenses, UPR 3228, CNRS-UPS-INSA-UGA, 143 Avenue de Rangueil, 31400 Toulouse, France
| | - P Frings
- Laboratoire National des Champs Magnétiques Intenses, UPR 3228, CNRS-UPS-INSA-UGA, 143 Avenue de Rangueil, 31400 Toulouse, France
| | - X Tonon
- Institut Laue-Langevin, 71 Avenue des Martyrs, CS 20156, 38042 Grenoble, France
| | - E Lelièvre-Berna
- Institut Laue-Langevin, 71 Avenue des Martyrs, CS 20156, 38042 Grenoble, France
| | - J Flouquet
- Service Photonique, Electronique et Ingénierie Quantiques, Université Grenoble Alpes et Commissariat à l'Energie Atomique, INAC, 17 rue des Martyrs, 38054 Grenoble, France
| | - L-P Regnault
- Institut Laue-Langevin, 71 Avenue des Martyrs, CS 20156, 38042 Grenoble, France
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