1
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Liu YC, Chen JX, Fu PX, Liao YQ, Wang YH, Wang YX, Liu Z, Gao S, Jiang SD. Electrically Induced Crystal Field Distortion in a Ferroelectric Perovskite Revealed by Electron Paramagnetic Resonance. J Am Chem Soc 2024; 146:19397-19404. [PMID: 38959221 DOI: 10.1021/jacs.4c05655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
The magnetoelectric material has attracted multidisciplinary interest in the past decade for its potential to accommodate various functions. Especially, the external electric field can drive the quantum behaviors of such materials via the spin-electric coupling effect, with the advantages of high spatial resolution and low energy cost. In this work, the spin-electric coupling effect of Mn2+-doped ferroelectric organic-inorganic hybrid perovskite [(CH3)3NCH2Cl]CdCl3 with a large piezoelectric effect was investigated. The electric field manipulation efficiency for the allowed transitions was determined by the pulsed electron paramagnetic resonance. The orientation-included Hamiltonian of the spin-electric coupling effect was obtained via simulating the angle-dependent electric field modulated continuous-wave electron paramagnetic resonance. The results demonstrate that the applied electric field affects not only the principal values of the zero-field splitting tensor but also its principal axis directions. This work proposes and exemplifies a route to understand the spin-electric coupling effect originating from the crystal field imposed on a spin ion being modified by the applied electric field, which may guide the rational screening and designing of hybrid perovskite ferroelectrics that satisfy the efficiency requirement of electric field manipulation of spins in quantum information applications.
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Affiliation(s)
- You-Chao Liu
- Spin-X Institute, School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, South China University of Technology, Guangzhou 511442, China
| | - Jia-Xin Chen
- Spin-X Institute, School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, South China University of Technology, Guangzhou 511442, China
| | - Peng-Xiang Fu
- Beijing National Laboratory of Molecular Science, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yi-Qiu Liao
- Spin-X Institute, School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, South China University of Technology, Guangzhou 511442, China
| | - Yi-Han Wang
- Beijing National Laboratory of Molecular Science, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Ye-Xin Wang
- Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area, Shenzhen-Hong Kong International Science and Technology Park, No. 3 Binglang Road, Futian District, Shenzhen, Guangdong 518045, China
| | - Zheng Liu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
| | - Song Gao
- Spin-X Institute, School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, South China University of Technology, Guangzhou 511442, China
- Beijing National Laboratory of Molecular Science, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
| | - Shang-Da Jiang
- Spin-X Institute, School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, South China University of Technology, Guangzhou 511442, China
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2
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Kaushik K, Sarkar A, Kamilya S, Li Y, Dechambenoit P, Rouzières M, Mehta S, Mondal A. Light-Induced, Structural Matrix Guided Stepwise Spin-State Switching in 3d-5d Molecular Assembly. Inorg Chem 2024; 63:7604-7612. [PMID: 38556753 DOI: 10.1021/acs.inorgchem.3c03970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
A new iron(II) molecular complex {[W(CN)8][Fe(bik*)3]2}BF4·7H2O·1.5CH3OH (1.7H2O·1.5CH3OH) was synthesized using a versatile octacyanotungstate(V) building block and N-donor bidentate ligand (bik* = bis(1-ethyl-1H-imidazol-2-yl)ketone) and detailed characterizations were carried out. The crystal structure of 1.7H2O·1.5CH3OH is composed of an ionic salt from one anionic [W(CN)8]3- unit, two isolated cationic [Fe(bik*)3]2+ units, and one BF4- counteranion in the asymmetric unit. Magnetic studies of 1.7H2O·1.5CH3OH display interesting two-step reversible thermo-induced spin-state switching and the partially desolvated form 1.7H2O shows a photomagnetic effect at low temperatures. Additionally, the physical properties of 1.7H2O·1.5CH3OH were compared with the monomeric unit of {[Fe(bik*)3]2}·4ReO4·H2O (2.H2O) and detailed photophysical investigations were also performed to study the effect of a structural matrix {[W(CN)8]3- and ReO4- unit} on the spin-state switching properties of the [Fe(bik*)3]2+ unit in both systems (1.7H2O·1.5CH3OH and 2.H2O).
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Affiliation(s)
- Krishna Kaushik
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, 560012 Bangalore, India
| | - Archita Sarkar
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, 560012 Bangalore, India
| | - Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, 560012 Bangalore, India
| | - Yanling Li
- Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, F-75252 Paris, cedex 5, France
| | - Pierre Dechambenoit
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600 Pessac, France
| | - Mathieu Rouzières
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600 Pessac, France
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, 560012 Bangalore, India
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, 560012 Bangalore, India
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3
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Wang F, Shen W, Shui Y, Chen J, Wang H, Wang R, Qin Y, Wang X, Wan J, Zhang M, Lu X, Yang T, Song F. Electrically controlled nonvolatile switching of single-atom magnetism in a Dy@C 84 single-molecule transistor. Nat Commun 2024; 15:2450. [PMID: 38503743 PMCID: PMC10951203 DOI: 10.1038/s41467-024-46854-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 03/12/2024] [Indexed: 03/21/2024] Open
Abstract
Single-atom magnetism switching is a key technique towards the ultimate data storage density of computer hard disks and has been conceptually realized by leveraging the spin bistability of a magnetic atom under a scanning tunnelling microscope. However, it has rarely been applied to solid-state transistors, an advancement that would be highly desirable for enabling various applications. Here, we demonstrate realization of the electrically controlled Zeeman effect in Dy@C84 single-molecule transistors, thus revealing a transition in the magnetic moment from 3.8μ B to 5.1μ B for the ground-state GN at an electric field strength of 3 - 10 MV/cm. The consequent magnetoresistance significantly increases from 600% to 1100% at the resonant tunneling point. Density functional theory calculations further corroborate our realization of nonvolatile switching of single-atom magnetism, and the switching stability emanates from an energy barrier of 92 meV for atomic relaxation. These results highlight the potential of using endohedral metallofullerenes for high-temperature, high-stability, high-speed, and compact single-atom magnetic data storage.
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Affiliation(s)
- Feng Wang
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China
- Institute of Atom Manufacturing, Nanjing University, Suzhou, 215163, China
| | - Wangqiang Shen
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Yuan Shui
- MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Jun Chen
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China
- Institute of Atom Manufacturing, Nanjing University, Suzhou, 215163, China
| | - Huaiqiang Wang
- Center for Quantum Transport and Thermal Energy Science, School of Physics and Technology, Nanjing Normal University, Nanjing, 210023, China
| | - Rui Wang
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China
| | - Yuyuan Qin
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China
| | - Xuefeng Wang
- State Key Laboratory of Spintronics Devices and Technologies, School of Electronic Science and Engineering, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, China
| | - Jianguo Wan
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China
| | - Minhao Zhang
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
- Institute of Atom Manufacturing, Nanjing University, Suzhou, 215163, China.
| | - Xing Lu
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Tao Yang
- MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Fengqi Song
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
- Institute of Atom Manufacturing, Nanjing University, Suzhou, 215163, China.
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4
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Chiesa A, Santini P, Garlatti E, Luis F, Carretta S. Molecular nanomagnets: a viable path toward quantum information processing? REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2024; 87:034501. [PMID: 38314645 DOI: 10.1088/1361-6633/ad1f81] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 01/17/2024] [Indexed: 02/06/2024]
Abstract
Molecular nanomagnets (MNMs), molecules containing interacting spins, have been a playground for quantum mechanics. They are characterized by many accessible low-energy levels that can be exploited to store and process quantum information. This naturally opens the possibility of using them as qudits, thus enlarging the tools of quantum logic with respect to qubit-based architectures. These additional degrees of freedom recently prompted the proposal for encoding qubits with embedded quantum error correction (QEC) in single molecules. QEC is the holy grail of quantum computing and this qudit approach could circumvent the large overhead of physical qubits typical of standard multi-qubit codes. Another important strength of the molecular approach is the extremely high degree of control achieved in preparing complex supramolecular structures where individual qudits are linked preserving their individual properties and coherence. This is particularly relevant for building quantum simulators, controllable systems able to mimic the dynamics of other quantum objects. The use of MNMs for quantum information processing is a rapidly evolving field which still requires to be fully experimentally explored. The key issues to be settled are related to scaling up the number of qudits/qubits and their individual addressing. Several promising possibilities are being intensively explored, ranging from the use of single-molecule transistors or superconducting devices to optical readout techniques. Moreover, new tools from chemistry could be also at hand, like the chiral-induced spin selectivity. In this paper, we will review the present status of this interdisciplinary research field, discuss the open challenges and envisioned solution paths which could finally unleash the very large potential of molecular spins for quantum technologies.
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Affiliation(s)
- A Chiesa
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
- INFN-Sezione di Milano-Bicocca, Gruppo Collegato di Parma, 43124 Parma, Italy
- UdR Parma, INSTM, I-43124 Parma, Italy
| | - P Santini
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
- INFN-Sezione di Milano-Bicocca, Gruppo Collegato di Parma, 43124 Parma, Italy
- UdR Parma, INSTM, I-43124 Parma, Italy
| | - E Garlatti
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
- INFN-Sezione di Milano-Bicocca, Gruppo Collegato di Parma, 43124 Parma, Italy
- UdR Parma, INSTM, I-43124 Parma, Italy
| | - F Luis
- Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC, Universidad de Zaragoza, Zaragoza, Spain
- Departamento de Fısica de la Materia Condensada, Universidad de Zaragoza, Zaragoza, Spain
| | - S Carretta
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
- INFN-Sezione di Milano-Bicocca, Gruppo Collegato di Parma, 43124 Parma, Italy
- UdR Parma, INSTM, I-43124 Parma, Italy
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5
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Chicco S, Allodi G, Chiesa A, Garlatti E, Buch CD, Santini P, De Renzi R, Piligkos S, Carretta S. Proof-of-Concept Quantum Simulator Based on Molecular Spin Qudits. J Am Chem Soc 2024; 146:1053-1061. [PMID: 38147824 PMCID: PMC10785809 DOI: 10.1021/jacs.3c12008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 12/28/2023]
Abstract
The use of d-level qudits instead of two-level qubits can largely increase the power of quantum logic for many applications, ranging from quantum simulations to quantum error correction. Magnetic molecules are ideal spin systems to realize these large-dimensional qudits. Indeed, their Hamiltonian can be engineered to an unparalleled extent and can yield a spectrum with many low-energy states. In particular, in the past decade, intense theoretical, experimental, and synthesis efforts have been devoted to develop quantum simulators based on molecular qubits and qudits. However, this remarkable potential is practically unexpressed, because no quantum simulation has ever been experimentally demonstrated with these systems. Here, we show the first prototype quantum simulator based on an ensemble of molecular qudits and a radiofrequency broadband spectrometer. To demonstrate the operativity of the device, we have simulated quantum tunneling of the magnetization and the transverse-field Ising model, representative of two different classes of problems. These results represent an important step toward the actual use of molecular spin qudits in quantum technologies.
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Affiliation(s)
- Simone Chicco
- Dipartimento
di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
- INSTM, UdR Parma, I-43124 Parma, Italy
| | - Giuseppe Allodi
- Dipartimento
di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
| | - Alessandro Chiesa
- Dipartimento
di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
- INSTM, UdR Parma, I-43124 Parma, Italy
- INFN-Sezione
Milano-Bicocca, Gruppo Collegato di Parma, I-43124 Parma, Italy
| | - Elena Garlatti
- Dipartimento
di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
- INSTM, UdR Parma, I-43124 Parma, Italy
- INFN-Sezione
Milano-Bicocca, Gruppo Collegato di Parma, I-43124 Parma, Italy
| | - Christian D. Buch
- Department
of Chemistry, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Paolo Santini
- Dipartimento
di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
- INSTM, UdR Parma, I-43124 Parma, Italy
- INFN-Sezione
Milano-Bicocca, Gruppo Collegato di Parma, I-43124 Parma, Italy
| | - Roberto De Renzi
- Dipartimento
di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
| | - Stergios Piligkos
- Department
of Chemistry, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Stefano Carretta
- Dipartimento
di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
- INSTM, UdR Parma, I-43124 Parma, Italy
- INFN-Sezione
Milano-Bicocca, Gruppo Collegato di Parma, I-43124 Parma, Italy
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6
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Wang YX, Su D, Ma Y, Sun Y, Cheng P. Electrical detection and modulation of magnetism in a Dy-based ferroelectric single-molecule magnet. Nat Commun 2023; 14:7901. [PMID: 38036549 PMCID: PMC10689763 DOI: 10.1038/s41467-023-43815-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 11/21/2023] [Indexed: 12/02/2023] Open
Abstract
Electrical control of magnetism in single-molecule magnets with peculiar quantum magnetic behaviours has promise for applications in molecular electronics and quantum computing. Nevertheless, such kind of magnetoelectric effects have not been achieved in such materials. Herein, we report the successful realization of significant magnetoelectric effects by introducing ferroelectricity into a dysprosium-based single-molecule magnet through spatial cooperation between flexible organic ligands and halide ions. The stair-shaped magnetization hysteresis loop, alternating current susceptibility, and magnetic relaxation can be directly modulated by applying a moderate electric field. Conversely, the electric polarization can be modulated by applying a small magnetic field. In addition, a resonant magnetodielectric effect is clearly observed, which enables detection of quantum tunnelling of magnetization by a simple electrical measurement. The integration of ferroelectricity into single-molecule magnets not only broadens the family of single-molecule magnets but also makes electrical detection and modulation of the quantum tunnelling of magnetization a reality.
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Affiliation(s)
- Yu-Xia Wang
- Key Laboratory of Advanced Energy Material Chemistry, Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center, and Haihe Laboratory of Sustainable Chemical Transformations (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Dan Su
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, 100190, Beijing, China
| | - Yinina Ma
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, 100190, Beijing, China
| | - Young Sun
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, 100190, Beijing, China.
- Department of Applied Physics and Center of Quantum Materials and Devices, Chongqing University, Chongqing, 401331, China.
| | - Peng Cheng
- Key Laboratory of Advanced Energy Material Chemistry, Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center, and Haihe Laboratory of Sustainable Chemical Transformations (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China.
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7
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Wang JH, Javed MK, Li JX, Zhang YQ, Li ZY, Yamashita M. Ferromagnetically coupled single-chain magnets exhibiting a magnetic hysteresis of 0.42 Tesla in cyano-bridged FeIII2M II (M = Ni, Fe) coordination polymers. Dalton Trans 2023; 52:15510-15517. [PMID: 37581269 DOI: 10.1039/d3dt01043k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
The synthesis, single-crystal structures and magnetic properties of two new double-zigzag-chain cyano-bridged heterobimetallic {[MII(Py-NOH)2][FeIII(Tp*)(CN)3]2}·H2O ([FeIII2MII]) (Py-NOH = 4-pyridinealdoxime, Tp* = tris(3,5-dimethylpyrazol-1-yl)borohydride, M = Ni (1), Fe (2)) compounds are reported. The crystal structures of both compounds were determined by single-crystal X-ray diffraction. Complexes 1 and 2 are isostructural, with the crystal structure comprising neutral double-zigzag (4,2-ribbon-like) bimetallic chains. The FeIII ion is coordinated by three cyanide carbon atoms and three nitrogen atoms of Tp* anions. However, the MII ion is surrounded by four cyanide nitrogen atoms and two nitrogen atoms from two Py-NOH ligands. The crystal structures and magnetic studies demonstrate that both complexes behave as single-chain magnetics (SCMs) with intrachain ferromagnetic coupling. Furthermore, [FeIII2NiII] exhibits an excellent coercive field of 0.42 T at 1.8 K, among cyano-bridged 3d transition-metal-based SCMs reported thus far. Preliminary theoretical calculations provide a deep understanding of the magnetic properties of [FeIII2NiII].
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Affiliation(s)
- Jin-Hua Wang
- School of Materials Science and Engineering, Nankai University, Tianjin 300350, China.
- Shandong Engineering Research Center of Novel Pharmaceutical Excipients, Sustained and Controlled Release Preparations, College of Medicine and Nursing, Dezhou University, Dezhou 253023, P. R. China
| | | | - Jia-Xin Li
- School of Physical Science and Technology, Nanjing Normal University, No.1 Wenyuan Road, Qixia District, Nanjing 210023, P. R. China
| | - Yi-Quan Zhang
- School of Physical Science and Technology, Nanjing Normal University, No.1 Wenyuan Road, Qixia District, Nanjing 210023, P. R. China
| | - Zhao-Yang Li
- School of Materials Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
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8
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Kot P, Ismail M, Drost R, Siebrecht J, Huang H, Ast CR. Electric control of spin transitions at the atomic scale. Nat Commun 2023; 14:6612. [PMID: 37857623 PMCID: PMC10587172 DOI: 10.1038/s41467-023-42287-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 10/05/2023] [Indexed: 10/21/2023] Open
Abstract
Electric control of spins has been a longstanding goal in the field of solid state physics due to the potential for increased efficiency in information processing. This efficiency can be optimized by transferring spintronics to the atomic scale. We present electric control of spin resonance transitions in single TiH molecules by employing electron spin resonance scanning tunneling microscopy (ESR-STM). We find strong bias voltage dependent shifts in the ESR signal of about ten times its line width. We attribute this to the electric field in the tunnel junction, which induces a displacement of the spin system changing the g-factor and the effective magnetic field of the tip. We demonstrate direct electric control of the spin transitions in coupled TiH dimers. Our findings open up new avenues for fast coherent control of coupled spin systems and expands on the understanding of spin electric coupling.
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Affiliation(s)
- Piotr Kot
- Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, 70569, Stuttgart, Germany
| | - Maneesha Ismail
- Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, 70569, Stuttgart, Germany
| | - Robert Drost
- Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, 70569, Stuttgart, Germany
| | - Janis Siebrecht
- Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, 70569, Stuttgart, Germany
| | - Haonan Huang
- Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, 70569, Stuttgart, Germany
| | - Christian R Ast
- Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, 70569, Stuttgart, Germany.
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9
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Kintzel B, Böhme M, Plaul D, Görls H, Yeche N, Seewald F, Klauss HH, Zvyagin AA, Kampert E, Herrmannsdörfer T, Pascua G, Baines C, Luetkens H, Plass W. A Trinuclear High-Spin Iron(III) Complex with a Geometrically Frustrated Spin Ground State Featuring Negligible Magnetic Anisotropy and Antisymmetric Exchange. Inorg Chem 2023; 62:3420-3430. [PMID: 36796032 DOI: 10.1021/acs.inorgchem.2c03455] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
The trinuclear high-spin iron(III) complex [Fe3Cl3(saltagBr)(py)6]ClO4 {H5saltagBr = 1,2,3-tris[(5-bromo-salicylidene)amino]guanidine} was synthesized and characterized by several experimental and theoretical methods. The iron(III) complex exhibits molecular 3-fold symmetry imposed by the rigid ligand backbone and crystallizes in trigonal space group P3̅ with the complex cation lying on a crystallographic C3 axis. The high-spin states (S = 5/2) of the individual iron(III) ions were determined by Mößbauer spectroscopy and confirmed by CASSCF/CASPT2 ab initio calculations. Magnetic measurements show an antiferromagnetic exchange between the iron(III) ions leading to a geometrically spin-frustrated ground state. This was complemented by high-field magnetization experiments up to 60 T, which confirm the isotropic nature of the magnetic exchange and negligible single-ion anisotropy for the iron(III) ions. Muon-spin relaxation experiments were performed and further prove the isotropic nature of the coupled spin ground state and the presence of isolated paramagnetic molecular systems with negligible intermolecular interactions down to 20 mK. Broken-symmetry density functional theory calculations are consistent with the antiferromagnetic exchange between the iron(III) ions within the presented trinuclear high-spin iron(III) complex. Ab initio calculations further support the absence of appreciable magnetic anisotropy (D = 0.086, and E = 0.010 cm-1) and the absence of significant contributions from antisymmetric exchange, as the two Kramers doublets are virtually degenerate (ΔE = 0.005 cm-1). Therefore, this trinuclear high-spin iron(III) complex should be an ideal candidate for further investigations of spin-electric effects arising exclusively from the spin chirality of a geometrically frustrated S = 1/2 spin ground state of the molecular system.
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Affiliation(s)
- Benjamin Kintzel
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
| | - Michael Böhme
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
| | - Daniel Plaul
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
| | - Helmar Görls
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
| | - Nicolas Yeche
- Institut für Festkörper- und Materialphysik, Technische Universität Dresden, 01069 Dresden, Germany
| | - Felix Seewald
- Institut für Festkörper- und Materialphysik, Technische Universität Dresden, 01069 Dresden, Germany
| | - Hans-Henning Klauss
- Institut für Festkörper- und Materialphysik, Technische Universität Dresden, 01069 Dresden, Germany
| | - Andrei A Zvyagin
- Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, Kharkiv 61103, Ukraine.,V. N. Karazin Kharkiv National University, Kharkiv 61022, Ukraine.,Max-Planck Institut für Physik komplexer Systeme, 01187 Dresden, Germany
| | - Erik Kampert
- Hochfeld-Magnetlabor Dresden, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Thomas Herrmannsdörfer
- Hochfeld-Magnetlabor Dresden, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Gwendolyne Pascua
- Laboratory for Muon Spin Spectroscopy, Paul-Scherrer-Institute, 5232 Villigen, Switzerland
| | - Christopher Baines
- Laboratory for Muon Spin Spectroscopy, Paul-Scherrer-Institute, 5232 Villigen, Switzerland
| | - Hubertus Luetkens
- Laboratory for Muon Spin Spectroscopy, Paul-Scherrer-Institute, 5232 Villigen, Switzerland
| | - Winfried Plass
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
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10
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Lewkowitz M, Adams J, Sullivan NS, Wang P, Shatruk M, Zapf V, Arvij AS. Direct observation of electric field-induced magnetism in a molecular magnet. Sci Rep 2023; 13:2769. [PMID: 36797328 PMCID: PMC9935536 DOI: 10.1038/s41598-023-29840-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 02/10/2023] [Indexed: 02/18/2023] Open
Abstract
We report the direct observation of an electrically-induced magnetic susceptibility in the molecular nano- magnet [Fe3O(O2CPh)6(py)3]ClO4·py, an Fe3 trimer. This magnetoelectric effect results from the breaking of spatial inversion symmetry due to the spin configurations of the antiferromagnetic trimer. Both static and very low frequency electric fields were used. Fractional changes of the magnetic susceptibility of 11 ppb[Formula: see text] per kVm-1 for the temperature range 8.5 < T < 13.5 K were observed for applied electric fields up to 62 kV m-1. The changes in susceptibility were measured using a tunnel diode oscillator operating at liquid helium temperatures while the sample is held at a higher regulated temperature.
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Affiliation(s)
- M. Lewkowitz
- grid.15276.370000 0004 1936 8091Department of Physics, University of Florida, Florida, 32611 USA
| | - J. Adams
- grid.15276.370000 0004 1936 8091Department of Physics, University of Florida, Florida, 32611 USA
| | - N. S. Sullivan
- grid.15276.370000 0004 1936 8091Department of Physics, University of Florida, Florida, 32611 USA
| | - Ping Wang
- grid.255986.50000 0004 0472 0419Department of Chemistry and Biochemistry, Florida State University, Florida, 32306 USA
| | - M. Shatruk
- grid.255986.50000 0004 0472 0419Department of Chemistry and Biochemistry, Florida State University, Florida, 32306 USA
| | - V. Zapf
- grid.148313.c0000 0004 0428 3079Los Alamos National Laboratory, Los Alamos, NM 87545 USA
| | - Ali Sirusi Arvij
- grid.421818.60000 0000 9138 0897School of Science, Mathematics and Engineering, San Juan College, Farmington, NM 87402 USA
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11
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Hu Y, Li X, Li Q, Yang J. Bipolar Magnetic Molecules for Spin‐Polarized Electric Current in Molecular Junctions. Angew Chem Int Ed Engl 2022; 61:e202205036. [DOI: 10.1002/anie.202205036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Yujie Hu
- Innovation Center of Quantum Information and Quantum Physics Hefei National Research Center for Physical Sciences at the Microscale Department of Chemical Physics University of Science and Technology of China Hefei 230026 China
| | - Xingxing Li
- Innovation Center of Quantum Information and Quantum Physics Hefei National Research Center for Physical Sciences at the Microscale Department of Chemical Physics University of Science and Technology of China Hefei 230026 China
- Hefei National Laboratory Hefei 230088 China
| | - Qunxiang Li
- Innovation Center of Quantum Information and Quantum Physics Hefei National Research Center for Physical Sciences at the Microscale Department of Chemical Physics University of Science and Technology of China Hefei 230026 China
- Hefei National Laboratory Hefei 230088 China
| | - Jinlong Yang
- Innovation Center of Quantum Information and Quantum Physics Hefei National Research Center for Physical Sciences at the Microscale Department of Chemical Physics University of Science and Technology of China Hefei 230026 China
- Hefei National Laboratory Hefei 230088 China
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12
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de Souza MS, Reis SG, Stinghen D, Escobar LBL, Allão Cassaro RA, Poneti G, S Bortolot C, Marbey J, Hill S, Vaz MGF. High-Frequency EPR Studies of New 2p-3d Complexes Based on a Triazolyl-Substituted Nitronyl Nitroxide Radical: The Role of Exchange Anisotropy in a Cu-Radical System. Inorg Chem 2022; 61:12118-12128. [PMID: 35876616 DOI: 10.1021/acs.inorgchem.2c00679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Using the 1-(m-tolyl)-1H-1,2,3-triazole-4-(4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) (TlTrzNIT) radical and metal β-diketonate complexes [M(hfac)2(H2O)2], where hfac is hexafluoroacetylacetonato, three new 2p-3d heterospin complexes were synthesized. Their structures were solved using single crystal X-ray diffraction data, and magnetic investigation was performed by DC and AC measurements and multifrequency EPR spectroscopy. Compounds 1 and 2 are isostructural complexes with molecular formula [M3(TlTrzNIT)2(hfac)6] (MII = Mn or Cu) while compound 3 is the mononuclear [Co(TlTrzNIT)(hfac)2] complex. In all complexes, the radical acts as a bidentate ligand through the oxygen atom of the nitroxide moiety and the nitrogen atom from the triazole group. Furthermore, in compounds 1 and 2, the TlTrzNIT is bridge-coordinated between two metal centers, leading to the formation of trinuclear complexes. The fitting of the static magnetic behavior reveals antiferromagnetic and ferromagnetic intramolecular interactions for complexes 1 and 2, respectively. The EPR spectra of 1 are well described by an isolated ferrimagnetic S = 13/2 (= 5/2 - 1/2 + 5/2 - 1/2 + 5/2) ground state with a biaxial zero-field splitting (ZFS) interaction characterized, respectively, by 2nd order axial and rhombic parameters, D and E, such that E/D is close to the maximum of 0.33. Meanwhile, EPR spectra for 2 are explained in terms of a ferromagnetic model with weakly anisotropic Cu-radical exchange interactions, giving rise to an isolated S = 5/2 (= 5 × 1/2) ground state with both an anisotropic g tensor and a weak ZFS interaction. Complex 2 represents one of only a few examples of Cu-radical moieties with measurable exchange anisotropy.
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Affiliation(s)
- Mateus S de Souza
- Instituto de Química, Universidade Federal Fluminense, Niterói, Rio de Janeiro 24020-150, Brazil
| | - Samira G Reis
- Instituto de Química, Universidade Federal Fluminense, Niterói, Rio de Janeiro 24020-150, Brazil
| | - Danilo Stinghen
- Instituto de Química, Universidade Federal Fluminense, Niterói, Rio de Janeiro 24020-150, Brazil
| | - Lívia B L Escobar
- Instituto de Física, Universidade Federal Fluminense, Niterói, Rio de Janeiro 24210-346, Brazil.,NHMFL, Florida State University, Tallahassee, Florida 32310, United States.,Departamento de Química, Pontifícia Universidade Católica, Gávea, Rio de Janeiro, RJ 22453-900, Brazil
| | - Rafael A Allão Cassaro
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - Giordano Poneti
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - Carolina S Bortolot
- Instituto de Química, Universidade Federal Fluminense, Niterói, Rio de Janeiro 24020-150, Brazil
| | - Jonathan Marbey
- NHMFL, Florida State University, Tallahassee, Florida 32310, United States.,Department of Physics, Florida State University, Tallahassee, Florida 32306, United States
| | - Stephen Hill
- NHMFL, Florida State University, Tallahassee, Florida 32310, United States.,Department of Physics, Florida State University, Tallahassee, Florida 32306, United States
| | - Maria G F Vaz
- Instituto de Química, Universidade Federal Fluminense, Niterói, Rio de Janeiro 24020-150, Brazil
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13
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Hu Y, Li X, Li Q, Yang J. Bipolar Magnetic Molecules for Spin‐Polarized Electric Current in Molecular Junctions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yujie Hu
- USTC: University of Science and Technology of China Department of Chemical Physics CHINA
| | - Xingxing Li
- USTC: University of Science and Technology of China Department of Chemical Physics 96 Jinzhai Road 230026 Hefei CHINA
| | - Qunxiang Li
- USTC: University of Science and Technology of China Department of Chemical Physics CHINA
| | - Jinlong Yang
- USTC: University of Science and Technology of China Department of Chemical Physics CHINA
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14
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Das S, Laguta V, Inzani K, Huang W, Liu J, Chatterjee R, McCarter MR, Susarla S, Ardavan A, Junquera J, Griffin SM, Ramesh R. Inherent Spin-Polarization Coupling in a Magnetoelectric Vortex. NANO LETTERS 2022; 22:3976-3982. [PMID: 35561341 DOI: 10.1021/acs.nanolett.2c00496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Solid-state materials are currently being explored as a platform for the manipulation of spins for spintronics and quantum information science. More broadly, a wide spectrum of ferroelectric materials, spanning from inorganic oxides to polymeric systems such as PVDF, present a different approach to explore quantum phenomena in which the spins are set and manipulated with electric fields. Using dilute Fe3+-doped ferroelectric PbTiO3-SrTiO3 superlattices as a model system, we demonstrate intrinsic spin-polarization control of spin directionality in complex ferroelectric vortices and skyrmions. Electron paramagnetic resonance (EPR) spectra show that the spins in the Fe3+ ion are strongly coupled to the local polarization and preferentially aligned perpendicular to the ferroelectric polar c axis in this complex vortex structure. The effect of polarization-spin directionality is corroborated by first-principles calculations, demonstrating the variation of the spin directionality with the polar texture and offering the potential for future quantum analogues of macroscopic magnetoelectric devices.
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Affiliation(s)
- Sujit Das
- Material Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Valentyn Laguta
- Institute of Physics of the Czech Academy of Sciences, Cukrovarnická 10, 162 00 Prague, Czech Republic
| | - Katherine Inzani
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
| | - Weichuan Huang
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
| | - Junjie Liu
- CAESR, Department of Physics, University of Oxford, The Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom
| | - Ruchira Chatterjee
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Margaret R McCarter
- Department of Physics, University of California, Berkeley, California 94720, United States
| | - Sandhya Susarla
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Arzhang Ardavan
- CAESR, Department of Physics, University of Oxford, The Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom
| | - Javier Junquera
- Departamento de Ciencias de la Tierra y Física de la Materia Condensada, Universidad de Cantabria, Cantabria Campus Internacional, Avenida de los Castros s/n, E-39005 Santander, Spain
| | - Sinéad M Griffin
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Ramamoorthy Ramesh
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
- Department of Physics, University of California, Berkeley, California 94720, United States
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15
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Fang YH, Liu Z, Zhou S, Fu PX, Wang YX, Wang ZY, Wang ZM, Gao S, Jiang SD. Spin-Electric Coupling with Anisotropy-Induced Vanishment and Enhancement in Molecular Ferroelectrics. J Am Chem Soc 2022; 144:8605-8612. [PMID: 35512343 DOI: 10.1021/jacs.2c00484] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Manipulating quantum properties by electric fields using spin-electric coupling (SEC) effects promises spatial addressability. While several studies about inorganic materials showing the SEC functionality have been reported, the vastly tunable crystal structures of molecular ferroelectrics provide a range of rationally designable materials yet to be exploited. In this work, Mn2+-doped molecular ferroelectrics are chosen to experimentally demonstrate the feasibility of achieving the quantum coherent SEC effect in molecular ferroelectrics for the first time. The electric field pulse applied between Hahn-echo pulses in electron paramagnetic resonance (EPR) experiments causes controllable phase shifts via manipulating of the zero-field splitting (ZFS) of the Mn(II) ions. Detailed investigations of the aMn crystal showed unexpected SEC vanishment and enhancement at different crystal orientations, which were elucidated by studying the spin Hamiltonian and magnetic anisotropy. With the enhanced SEC efficiency being achieved (0.68 Hz m/V), this work discovers an emerging material library of molecular ferroelectrics to implement coherent quantum control with selective and tunable SEC effects toward highly scalable quantum gates.
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Affiliation(s)
- Yu-Hui Fang
- Beijing National Laboratory of Molecular Science, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zheng Liu
- Spin-X Institute, School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, South China University of Technology, Guangzhou 510641, China
| | - Shen Zhou
- Spin-X Institute, School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, South China University of Technology, Guangzhou 510641, China.,College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
| | - Peng-Xiang Fu
- Beijing National Laboratory of Molecular Science, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Ye-Xin Wang
- Spin-X Institute, School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, South China University of Technology, Guangzhou 510641, China
| | - Zi-Yu Wang
- Beijing National Laboratory of Molecular Science, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhe-Ming Wang
- Beijing National Laboratory of Molecular Science, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Song Gao
- Beijing National Laboratory of Molecular Science, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.,Spin-X Institute, School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, South China University of Technology, Guangzhou 510641, China
| | - Shang-Da Jiang
- Spin-X Institute, School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, South China University of Technology, Guangzhou 510641, China
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16
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Dwivedi I, Sarkar A, Rajaraman G, Subramaniam C. Electric-Field-Induced Solid-Gas Interfacial Chemical Reaction in Carbon Nanotube Ensembles: Route toward Ultra-sensitive Gas Detectors. ACS APPLIED MATERIALS & INTERFACES 2022; 14:13271-13279. [PMID: 35266685 DOI: 10.1021/acsami.1c23670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The electric field at the sharp pointed tips of single wall carbon nanotube ensembles has been utilized to kinetically accelerate hitherto unobserved chemical reactions at the heterogeneous solid-gas interfaces. The principle of ″action-of-points″ drives specific chemical reactions between the defect sites of single wall carbon nanotubes (CNTs) and ppb levels of gaseous hydrogen sulfide. This is manifested as changes in the electrical conductivity of the conductive CNT-ensemble (cCNT) and visually tracked as enthalpic modulations at the site of the reaction through infrared thermometry. Importantly, the principle has been observed for a variety of analytes such as NH3, H2O, and H2S, leading to distinctly correlatable changes in reactivity and conductivity changes. Theoretical calculations based on the density functional theory in the presence and absence of applied electric field reveal that the applied electric field activates the H2S gas molecules by charge polarization, yielding favorable energetics. These results imply the possibility of carrying out site-specific chemical modifications for nanomaterials and also provide transformative opportunities for the development of miniaturized e-nose-based gas analyzers.
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Affiliation(s)
- Itisha Dwivedi
- Department of Chemistry, Indian Institution of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India
| | - Arup Sarkar
- Department of Chemistry, Indian Institution of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institution of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India
| | - Chandramouli Subramaniam
- Department of Chemistry, Indian Institution of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India
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17
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Mondal A, Konar S. Effect of an axial coordination environment on quantum tunnelling of magnetization for dysprosium single-ion magnets with theoretical insight. Dalton Trans 2022; 51:1464-1473. [PMID: 34988577 DOI: 10.1039/d1dt03678e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Herein, we report two mononuclear dysprosium complexes [Dy(H4L){B(OMe)2(Ph)2}2](Cl)·MeOH (1) and [Dy(H4L){MeOH)2(NCS)2}](Cl) (2) [where H4L = 2,2'-(pyridine-2,6-diylbis(ethan-1-yl-1-ylidene))bis(N-phenylhydrazinecarboxamide)] with different axial coordination environments. The structural analysis revealed that the pentadentate H4L ligand binds through the equatorial position in both complexes. In complex 1, the axial positions are occupied by bidentate dimethoxydiphenyleborate [B(OMe)2(Ph)2]-. On the other hand, in complex 2, one axial position is occupied by two NCS- and one MeOH molecule while another MeOH molecule is coordinated to the other axial position. Magnetic measurements disclose the presence of field-induced slow relaxation of magnetization with an energy barrier of Ueff = 30 K for 1 whereas no such effective barrier was observed in complex 2. Detailed analysis of field and temperature dependence of the relaxation time confirms the major role of Raman, QTM, and direct processes rather than the Orbach process in complex 1. It was observed that [B(OMe)2(Ph)2]- provides higher axial anisotropy which slows down the QTM process (relaxation time for the QTM process is 2.70 × 10-5 s) in 1 as compared to NCS anions and MeOH molecules in 2 (1.03 × 10-8 s), and is responsible for the absence of an effective energy barrier in the latter complex as confirmed by ab initio calculations. The calculations also show that the presence of a large bidentate dimethoxydiphenyleborate ligand in axial positions may result in high-performance Dy-based single-ion magnets.
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Affiliation(s)
- Arpan Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass road, Bhauri, Bhopal-462066, MP, India.
| | - Sanjit Konar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass road, Bhauri, Bhopal-462066, MP, India.
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18
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Heinrich AJ, Oliver WD, Vandersypen LMK, Ardavan A, Sessoli R, Loss D, Jayich AB, Fernandez-Rossier J, Laucht A, Morello A. Quantum-coherent nanoscience. NATURE NANOTECHNOLOGY 2021; 16:1318-1329. [PMID: 34845333 DOI: 10.1038/s41565-021-00994-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 09/01/2021] [Indexed: 05/25/2023]
Abstract
For the past three decades nanoscience has widely affected many areas in physics, chemistry and engineering, and has led to numerous fundamental discoveries, as well as applications and products. Concurrently, quantum science and technology has developed into a cross-disciplinary research endeavour connecting these same areas and holds burgeoning commercial promise. Although quantum physics dictates the behaviour of nanoscale objects, quantum coherence, which is central to quantum information, communication and sensing, has not played an explicit role in much of nanoscience. This Review describes fundamental principles and practical applications of quantum coherence in nanoscale systems, a research area we call quantum-coherent nanoscience. We structure this Review according to specific degrees of freedom that can be quantum-coherently controlled in a given nanoscale system, such as charge, spin, mechanical motion and photons. We review the current state of the art and focus on outstanding challenges and opportunities unlocked by the merging of nanoscience and coherent quantum operations.
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Affiliation(s)
- Andreas J Heinrich
- Center for Quantum Nanoscience (QNS), Institute for Basic Science, Seoul, Korea.
- Physics Department, Ewha Womans University, Seoul, Korea.
| | - William D Oliver
- Department of Electrical Engineering and Computer Science, and Department of Physics, MIT, Cambridge, MA, USA
- Lincoln Laboratory, MIT, Lexington, MA, USA
| | | | - Arzhang Ardavan
- CAESR, The Clarendon Laboratory, Department of Physics, University of Oxford, Oxford, UK
| | - Roberta Sessoli
- Department of Chemistry 'U. Schiff' & INSTM, University of Florence, Sesto Fiorentino, Italy
| | - Daniel Loss
- Department of Physics, University of Basel, Basel, Switzerland
| | | | - Joaquin Fernandez-Rossier
- QuantaLab, International Iberian Nanotechnology Laboratory (INL), Braga, Portugal
- Departamento de Física Aplicada, Universidad de Alicante, Alicante, Spain
| | - Arne Laucht
- School of Electrical Engineering and Telecommunications, UNSW Sydney, Sydney, New South Wales, Australia
| | - Andrea Morello
- School of Electrical Engineering and Telecommunications, UNSW Sydney, Sydney, New South Wales, Australia.
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19
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Syntheses, Structures and Magnetic Properties of M2 (M = Fe, Co) Complexes with N6 Coordination Environment: Field-Induced Slow Magnetic Relaxation in Co2. MAGNETOCHEMISTRY 2021. [DOI: 10.3390/magnetochemistry7120153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Two dinuclear complexes [M2(H2L)2](ClO4)4·2MeCN (M = Co for Co2 and Fe for Fe2) were synthesized using a symmetric hydrazone ligand with the metal ions in an N6 coordination environment. The crystal structures and magnetic properties were determined by single-crystal X-ray diffraction and magnetic susceptibility measurements. The crystal structure study revealed that the spin centers were all in the high-spin state with a distorted octahedron (Oh) geometry. Dynamic magnetic properties measurements revealed that complex Co2 exhibited field-induced single-molecule magnet properties with two-step relaxation in which the fast relaxation path was from QTM and the slow relaxation path from the thermal relaxation under an applied field.
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20
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Houard F, Gendron F, Suffren Y, Guizouarn T, Dorcet V, Calvez G, Daiguebonne C, Guillou O, Le Guennic B, Mannini M, Bernot K. Single-chain magnet behavior in a finite linear hexanuclear molecule. Chem Sci 2021; 12:10613-10621. [PMID: 34447554 PMCID: PMC8356920 DOI: 10.1039/d1sc02033a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/09/2021] [Indexed: 11/21/2022] Open
Abstract
The careful monitoring of crystallization conditions of a mixture made of a TbIII building block and a substituted nitronyl-nitroxide that typically provides infinite coordination polymers (chains), affords a remarkably stable linear hexanuclear molecule made of six TbIII ions and five NIT radicals. The hexanuclear units are double-bridged by water molecules but ab initio calculations demonstrate that this bridge is inefficient in mediating any magnetic interaction other than a small dipolar antiferromagnetic coupling. Surprisingly the hexanuclears, despite being finite molecules, show a single-chain magnet (SCM) behavior. This results in a magnetic hysteresis at low temperature whose coercive field is almost doubled when compared to the chains. We thus demonstrate that finite linear molecules can display SCM magnetic relaxation, which is a strong asset for molecular data storage purposes because 1D magnetic relaxation is more robust than the relaxation mechanisms observed in single-molecule magnets (SMMs) where under-barrier magnetic relaxation can operate.
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Affiliation(s)
- Felix Houard
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Frederic Gendron
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Yan Suffren
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Thierry Guizouarn
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Vincent Dorcet
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Guillaume Calvez
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Carole Daiguebonne
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Olivier Guillou
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Boris Le Guennic
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Matteo Mannini
- LAboratory for Molecular Magnetism (LA.M.M.), Dipartimento di Chimica "Ugo Schiff"(DICUS), Università degli Studi di Firenze, INSTM, UdR Firenze Via della Lastruccia n. 3, Sesto Fiorentino (FI) 50019 Italy
| | - Kevin Bernot
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
- Institut Universitaire de France 1 rue Descartes 75005 Paris France
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21
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Yu CJ, von Kugelgen S, Laorenza DW, Freedman DE. A Molecular Approach to Quantum Sensing. ACS CENTRAL SCIENCE 2021; 7:712-723. [PMID: 34079892 PMCID: PMC8161477 DOI: 10.1021/acscentsci.0c00737] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Indexed: 06/09/2023]
Abstract
The second quantum revolution hinges on the creation of materials that unite atomic structural precision with electronic and structural tunability. A molecular approach to quantum information science (QIS) promises to enable the bottom-up creation of quantum systems. Within the broad reach of QIS, which spans fields ranging from quantum computation to quantum communication, we will focus on quantum sensing. Quantum sensing harnesses quantum control to interrogate the world around us. A broadly applicable class of quantum sensors would feature adaptable environmental compatibility, control over distance from the target analyte, and a tunable energy range of interaction. Molecules enable customizable "designer" quantum sensors with tunable functionality and compatibility across a range of environments. These capabilities offer the potential to bring unmatched sensitivity and spatial resolution to address a wide range of sensing tasks from the characterization of dynamic biological processes to the detection of emergent phenomena in condensed matter. In this Outlook, we outline the concepts and design criteria central to quantum sensors and look toward the next generation of designer quantum sensors based on new classes of molecular sensors.
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Buch CD, Hansen SH, Mitcov D, Tram CM, Nichol GS, Brechin EK, Piligkos S. Design of pure heterodinuclear lanthanoid cryptate complexes. Chem Sci 2021; 12:6983-6991. [PMID: 34123326 PMCID: PMC8153240 DOI: 10.1039/d1sc00987g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 04/14/2021] [Indexed: 01/01/2023] Open
Abstract
Heterolanthanide complexes are difficult to synthesize owing to the similar chemistry of the lanthanide ions. Consequently, very few purely heterolanthanide complexes have been synthesized. This is despite the fact that such complexes hold interesting optical and magnetic properties. To fine-tune these properties, it is important that one can choose complexes with any given combination of lanthanides. Herein we report a synthetic procedure which yields pure heterodinuclear lanthanide cryptates LnLn*LX3 (X = NO3 - or OTf-) based on the cryptand H3L = N[(CH2)2N[double bond, length as m-dash]CH-R-CH[double bond, length as m-dash]N-(CH2)2]3N (R = m-C6H2OH-2-Me-5). In the synthesis the choice of counter ion and solvent proves crucial in controlling the Ln-Ln* composition. Choosing the optimal solvent and counter ion afford pure heterodinuclear complexes with any given combination of Gd(iii)-Lu(iii) including Y(iii). To demonstrate the versatility of the synthesis all dinuclear combinations of Y(iii), Gd(iii), Yb(iii) and Lu(iii) were synthesized resulting in 10 novel complexes of the form LnLn*L(OTf)3 with LnLn* = YbGd 1, YbY 2, YbLu 3, YbYb 4, LuGd 5, LuY 6, LuLu 7, YGd 8, YY 9 and GdGd 10. Through the use of 1H, 13C NMR and mass spectrometry the heterodinuclear nature of YbGd, YbY, YbLu, LuGd, LuY and YGd was confirmed. Crystal structures of LnLn*L(NO3)3 reveal short Ln-Ln distances of ∼3.5 Å. Using SQUID magnetometry the exchange coupling between the lanthanide ions was found to be anti-ferromagnetic for GdGd and YbYb while ferromagnetic for YbGd.
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Affiliation(s)
- Christian D Buch
- Department of Chemistry, University of Copenhagen Universitetsparken 5 DK-2100 Copenhagen Denmark
| | - Steen H Hansen
- Department of Chemistry, University of Copenhagen Universitetsparken 5 DK-2100 Copenhagen Denmark
| | - Dmitri Mitcov
- Department of Chemistry, University of Copenhagen Universitetsparken 5 DK-2100 Copenhagen Denmark
| | - Camilla M Tram
- Department of Chemistry, University of Copenhagen Universitetsparken 5 DK-2100 Copenhagen Denmark
| | - Gary S Nichol
- EaStCHEM School of Chemistry, University of Edinburgh Edinburgh UK
| | - Euan K Brechin
- EaStCHEM School of Chemistry, University of Edinburgh Edinburgh UK
| | - Stergios Piligkos
- Department of Chemistry, University of Copenhagen Universitetsparken 5 DK-2100 Copenhagen Denmark
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23
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Kintzel B, Fittipaldi M, Böhme M, Cini A, Tesi L, Buchholz A, Sessoli R, Plass W. Spin-Electric Coupling in a Cobalt(II)-Based Spin Triangle Revealed by Electric-Field-Modulated Electron Spin Resonance Spectroscopy. Angew Chem Int Ed Engl 2021; 60:8832-8838. [PMID: 33511751 PMCID: PMC8048656 DOI: 10.1002/anie.202017116] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Indexed: 11/18/2022]
Abstract
A cobalt(II)-based spin triangle shows a significant spin-electric coupling. [Co3 (pytag)(py)6 Cl3 ]ClO4 ⋅3 py crystallizes in the acentric monoclinic space group P21 . The intra-triangle antiferromagnetic interaction, of the order of ca. -15 cm-1 (H=-JSa Sb ), leads to spin frustration. The two expected energy-degenerate ground doublets are, however, separated by a few wavenumbers, as a consequence of magnetic anisotropy and deviations from threefold symmetry. The Co3 planes of symmetry-related molecules are almost parallel, allowing for the determination of the spin-electric properties of single crystals by EFM-ESR spectroscopy. The spin-electric effect detected when the electric field is applied in the Co3 plane was revealed by a shift in the resonance field. It was quantified as ΔgE /E=0.11×10-9 m V-1 , which in terms of frequency corresponds to approximately 0.3 Hz m V-1 . This value is comparable to what was determined for a Cu3 triangle despite the antiferromagnetic interaction being 20 times larger for the latter.
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Affiliation(s)
- Benjamin Kintzel
- Institut für Anorganische und Analytische ChemieFriedrich-Schiller-Universität JenaHumboldtstrasse 807743JenaGermany
| | - Maria Fittipaldi
- Department of Physics and AstronomyUniversity of Florence and INSTM UdRvia Sansone 1Sesto Fiorentino (FI)Italy
| | - Michael Böhme
- Institut für Anorganische und Analytische ChemieFriedrich-Schiller-Universität JenaHumboldtstrasse 807743JenaGermany
| | - Alberto Cini
- Dipartimento di Chimica “Ugo Schiff”Universitá degli Studi FirenzeVia della Lastruccia 3–1350019Sesto Fiorentino (FI)Italy
| | - Lorenzo Tesi
- Dipartimento di Chimica “Ugo Schiff”Universitá degli Studi FirenzeVia della Lastruccia 3–1350019Sesto Fiorentino (FI)Italy
- Current address: Institute of Physical ChemistryUniversity of StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Axel Buchholz
- Institut für Anorganische und Analytische ChemieFriedrich-Schiller-Universität JenaHumboldtstrasse 807743JenaGermany
| | - Roberta Sessoli
- Dipartimento di Chimica “Ugo Schiff”Universitá degli Studi FirenzeVia della Lastruccia 3–1350019Sesto Fiorentino (FI)Italy
| | - Winfried Plass
- Institut für Anorganische und Analytische ChemieFriedrich-Schiller-Universität JenaHumboldtstrasse 807743JenaGermany
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24
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Kintzel B, Fittipaldi M, Böhme M, Cini A, Tesi L, Buchholz A, Sessoli R, Plass W. Spin‐elektrische Kopplung in einem Cobalt(II)‐basierten Spindreieck, gezeigt mithilfe elektrisches‐Feld‐modulierter Elektronenspinresonanzspektroskopie. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Benjamin Kintzel
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Deutschland
| | - Maria Fittipaldi
- Department of Physics and Astronomy University of Florence and INSTM UdR via Sansone 1 Sesto Fiorentino (FI) Italien
| | - Michael Böhme
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Deutschland
| | - Alberto Cini
- Dipartimento di Chimica “Ugo Schiff” Universitá degli Studi Firenze Via della Lastruccia 3–13 50019 Sesto Fiorentino (FI) Italien
| | - Lorenzo Tesi
- Dipartimento di Chimica “Ugo Schiff” Universitá degli Studi Firenze Via della Lastruccia 3–13 50019 Sesto Fiorentino (FI) Italien
- Derzeitige Adresse: Institut für Physikalische Chemistry Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Axel Buchholz
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Deutschland
| | - Roberta Sessoli
- Dipartimento di Chimica “Ugo Schiff” Universitá degli Studi Firenze Via della Lastruccia 3–13 50019 Sesto Fiorentino (FI) Italien
| | - Winfried Plass
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Deutschland
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25
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Liu J, Laguta VV, Inzani K, Huang W, Das S, Chatterjee R, Sheridan E, Griffin SM, Ardavan A, Ramesh R. Coherent electric field manipulation of Fe 3+ spins in PbTiO 3. SCIENCE ADVANCES 2021; 7:7/10/eabf8103. [PMID: 33658210 PMCID: PMC7929503 DOI: 10.1126/sciadv.abf8103] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 01/19/2021] [Indexed: 06/12/2023]
Abstract
Magnetoelectrics, materials that exhibit coupling between magnetic and electric degrees of freedom, not only offer a rich environment for studying the fundamental materials physics of spin-charge coupling but also present opportunities for future information technology paradigms. We present results of electric field manipulation of spins in a ferroelectric medium using dilute ferric ion-doped lead titanate as a model system. Combining first-principles calculations and electron paramagnetic resonance (EPR), we show that the ferric ion spins are preferentially aligned perpendicular to the ferroelectric polar axis, which we can manipulate using an electric field. We also demonstrate coherent control of the phase of spin superpositions by applying electric field pulses during time-resolved EPR measurements. Our results suggest a new pathway toward the manipulation of spins for quantum and classical spintronics.
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Affiliation(s)
- Junjie Liu
- CAESR, Department of Physics, University of Oxford, The Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK
| | - Valentin V Laguta
- Institute of Physics of the Czech Academy of Sciences, Cukrovarnická 10, 162 00 Prague, Czech Republic
| | - Katherine Inzani
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Weichuan Huang
- Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA
| | - Sujit Das
- Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA
- Department of Physics, University of California, Berkeley, CA 94720, USA
| | - Ruchira Chatterjee
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Evan Sheridan
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Sinéad M Griffin
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Arzhang Ardavan
- CAESR, Department of Physics, University of Oxford, The Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK.
| | - Ramamoorthy Ramesh
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
- Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA
- Department of Physics, University of California, Berkeley, CA 94720, USA
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26
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Zakrzewski JJ, Heczko M, Jankowski R, Chorazy S. Reversible Humidity-Driven Transformation of a Bimetallic {EuCo} Molecular Material: Structural, Sorption, and Photoluminescence Studies. Molecules 2021; 26:1102. [PMID: 33669754 PMCID: PMC7923019 DOI: 10.3390/molecules26041102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 02/09/2021] [Accepted: 02/17/2021] [Indexed: 11/25/2022] Open
Abstract
Functional molecule-based solids built of metal complexes can reveal a great impact of external stimuli upon their optical, magnetic, electric, and mechanical properties. We report a novel molecular material, {[EuIII(H2O)3(pyrone)4][CoIII(CN)6]}·nH2O (1, n = 2; 2, n = 1), which was obtained by the self-assembly of Eu3+ and [Co(CN)6]3- ions in the presence of a small 2-pyrrolidinone (pyrone) ligand in an aqueous medium. The as-synthesized material, 1, consists of dinuclear cyanido-bridged {EuCo} molecules accompanied by two H-bonded water molecules. By lowering the relative humidity (RH) below 30% at room temperature, 1 undergoes a single-crystal-to-single-crystal transformation related to the partial removal of crystallization water molecules which results in the new crystalline phase, 2. Both 1 and 2 solvates exhibit pronounced EuIII-centered visible photoluminescence. However, they differ in the energy splitting of the main emission band of a 5D0 → 7F2 origin, and the emission lifetime, which is longer in the partially dehydrated 2. As the 1 ↔ 2 structural transformation can be repeatedly reversed by changing the RH value, the reported material shows a room-temperature switching of detailed luminescent features including the ratio between emission components and the emission lifetime values.
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Affiliation(s)
| | | | | | - Szymon Chorazy
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland; (J.J.Z.); (M.H.); (R.J.)
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27
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Mondal A, Konar S. Strong Equatorial Crystal Field Enhances the Axial Anisotropy and Energy Barrier for Spin Reversal Process in Yb 2 Single Molecule Magnets. Chemistry 2021; 27:3449-3456. [PMID: 33084133 DOI: 10.1002/chem.202004379] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/20/2020] [Indexed: 02/03/2023]
Abstract
The importance of equatorial crystal fields on magnetic anisotropy of ytterbium single molecule magnets (SMMs) is observed for the first time. Herein, we report three similar dinuclear ytterbium complexes with the formula [Yb2 (3-OMe-L)2 (DMF)2 (NO3 )2 ]⋅DMF (1), [Yb2 (3-H-L)2 (DMF)2 (NO3 )2 ]⋅DMF⋅H2 O (2), and [Yb2 (3-NO3 -L)2 (DMF)2 (NO3 )2 ] (3), [where 3-X-H2 L=N'-(2-hydroxy-3-X-benzylidene)picolinohydrazide, X=OMe (1), H (2) NO2 (3)]. Detailed magnetic measurements reveal the presence of weak antiferromagnetic interactions between the Yb centers and a field-induced slow relaxation of magnetization in all complexes. A higher energy barrier for spin reversal was observed for complex 1 (Ueff =50 K) and it decreases in the order of 2 (47 K) to 3 (40 K). Notably, complex 1 shows a remarkable energy barrier within the frequency range of 1-850 Hz reported for Yb-based SMMs. Further, ab initio calculations show a higher axial anisotropy and lower quantum tunneling of magnetization (QTM) in the ground state for 1 compared to 2 and 3. It was also observed that the presence of a strong crystal field in the equatorial plane (when the ∡ O1-Yb-O3 bond angle is close to 90°) enhances the axial anisotropy and improves the SMM behavior in the studied complexes. Both the experimental and theoretical analysis of relaxation dynamics discloses that Raman and QTM play major role on slow relaxation process for all complexes. To provide more insight into the exchange interactions, broken-symmetry DFT calculations were performed.
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Affiliation(s)
- Arpan Mondal
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, Bhopal By-pass Road, Bhauri, Bhopal, 462066, Madhya Pradesh, India
| | - Sanjit Konar
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, Bhopal By-pass Road, Bhauri, Bhopal, 462066, Madhya Pradesh, India
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28
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Palii A, Aldoshin S, Tsukerblat B. Mixed-valence clusters: Prospects for single-molecule magnetoelectrics. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213555] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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29
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Sarkar A, Rajaraman G. Modulating magnetic anisotropy in Ln(iii) single-ion magnets using an external electric field. Chem Sci 2020; 11:10324-10330. [PMID: 34123178 PMCID: PMC8162309 DOI: 10.1039/d0sc03982a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 08/20/2020] [Indexed: 11/25/2022] Open
Abstract
Single-molecule magnets have potential uses in several nanotechnology applications, including high-density information storage devices, the realisation of which lies in enhancing the barrier height for magnetisation reversal (U eff). However, Ln(iii) single-ion magnets (SIMs) that have been reported recently reveal that the maximum value of U eff values that can be obtained by modulating the ligand fields has already been achieved. Here, we have explored, using a combination of DFT and ab initio CASSCF calculations, a unique way to enhance the magnetisation reversal barrier using an oriented external electric field in three well-known Ln(iii) single-ion magnets: [Dy(Py)5(O t Bu)2]+ (1), [Er{N(SiMe3)2}3Cl]- (2) and [Dy(CpMe3)Cl] (3). Our study reveals that, for apt molecules, if the appropriate direction and values of the electric fields are chosen, the barrier height can be enhanced by twice that of the limit set by the ligand field. The application of an electric field along the equatorial direction was found to be suitable for oblate shaped Dy(iii) complexes and an electric field along the axial direction was found to enhance the barrier height for a prolate Er(iii) complex. For complexes 2 and 3, the external electric field was able to magnify the barrier height to 2-3 times that of the original complexes. However, a moderate enhancement was noticed after application of the external electric field in the case of complex 1. This novel non-chemical fine-tuning approach to modulate magnetic anisotropy is expected to yield a new generation of SIMs.
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Affiliation(s)
- Arup Sarkar
- 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
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30
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Mitcov D, Platunov M, Buch CD, Reinholdt A, Døssing AR, Wilhelm F, Rogalev A, Piligkos S. Hard X-ray magnetochiral dichroism in a paramagnetic molecular 4f complex. Chem Sci 2020; 11:8306-8311. [PMID: 34123095 PMCID: PMC8163319 DOI: 10.1039/d0sc02709j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Magnetochiral dichroism (MΧD) originates in the coupling of local electric fields and magnetic moments in systems where a simultaneous break of space parity and time-reversal symmetries occurs. This magnetoelectric coupling, displayed by chiral magnetic materials, can be exploited to manipulate the magnetic moment of molecular materials at the single molecule level. We demonstrate herein the first experimental observation of X-ray magnetochiral dichroism in enantiopure chiral trigonal single crystals of a chiral mononuclear paramagnetic lanthanide coordination complex, namely, holmium oxydiacetate, at the Ho L3-edge. The observed magnetochiral effect is opposite for the two enantiomers and is rationalised on the basis of a multipolar expansion of the matter–radiation interaction. These results demonstrate that 4f–5d hybridization in chiral lanthanoid coordination complexes is at the origin of magnetochiral dichroism, an effect that could be exploited for addressing of their magnetic moment at the single molecule level. Magnetochiral Dichroism of chiral mononuclear lanthanoid complexes is for the first time detected by X-ray absorption measurements on single crystals of Holmium oxydiacetate, at the Ho L3-edge. The effect is of opposite sign for the two enantiomers.![]()
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Affiliation(s)
- Dmitri Mitcov
- Department of Chemistry, University of Copenhagen Universitetsparken 5 DK-2100 Copenhagen Denmark
| | - Mikhail Platunov
- ESRF - The European Synchrotron CS 40220 38043 Grenoble Cedex 9 France
| | - Christian D Buch
- Department of Chemistry, University of Copenhagen Universitetsparken 5 DK-2100 Copenhagen Denmark
| | - Anders Reinholdt
- Department of Chemistry, University of Copenhagen Universitetsparken 5 DK-2100 Copenhagen Denmark
| | - Anders R Døssing
- Department of Chemistry, University of Copenhagen Universitetsparken 5 DK-2100 Copenhagen Denmark
| | - Fabrice Wilhelm
- ESRF - The European Synchrotron CS 40220 38043 Grenoble Cedex 9 France
| | - Andrei Rogalev
- ESRF - The European Synchrotron CS 40220 38043 Grenoble Cedex 9 France
| | - Stergios Piligkos
- Department of Chemistry, University of Copenhagen Universitetsparken 5 DK-2100 Copenhagen Denmark
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31
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Kühne IA, Barker A, Zhang F, Stamenov P, O'Doherty O, Müller-Bunz H, Stein M, Rodriguez BJ, Morgan GG. Modulation of Jahn-Teller distortion and electromechanical response in a Mn 3+spin crossover complex. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:404002. [PMID: 32208375 DOI: 10.1088/1361-648x/ab82d1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 03/24/2020] [Indexed: 06/10/2023]
Abstract
Structural, magnetic and electromechanical changes resulting from spin crossover between the spin quintet and spin triplet forms of a mononuclear Mn3+complex embedded in six lattices with different charge balancing counterions are reported. Isostructural ClO4-and BF4-salts (1) and (2) each have two unique Mn3+sites which follow different thermal evolution pathways resulting in a crossover from the spin quintet form at room temperature to a 1:1 spin triplet:quintet ratio below 150 K. The PF6-(3) and NO3-(4) salts which each have one unique Mn3+site show a complete conversion from spin quintet to spin triplet over the same temperature range. A complete two step spin crossover is observed in the CF3SO3-lattice (5) with a 1:1 ratio of spin quintet and spin triplet forms at intermediate temperature, while the BPh4-lattice (6) stabilizes the spin triplet form over most of the temperature range with gradual and incomplete spin state switching above 250 K. An electromechanical piezoresponse was detected in NO3-complex4despite crystallization in a centrosymmetric space group. The role of deformations associated with stress-induced spin triplet-spin quintet switching in breaking the local symmetry are discussed and computational analysis is used to estimate the energy gap between the two spin states.
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Affiliation(s)
- Irina A Kühne
- School of Chemistry, University College Dublin (UCD), Dublin, Ireland
| | - Andrew Barker
- School of Chemistry, University College Dublin (UCD), Dublin, Ireland
| | - Fengyuan Zhang
- School of Physics and Conway Institute of Biomolecular and Biomedical Research, University College Dublin (UCD), Dublin, Ireland
| | - Plamen Stamenov
- School of Physics, Trinity College Dublin (TCD), Dublin, Ireland
| | - Oisín O'Doherty
- School of Chemistry, University College Dublin (UCD), Dublin, Ireland
| | - Helge Müller-Bunz
- School of Chemistry, University College Dublin (UCD), Dublin, Ireland
| | - Matthias Stein
- Max Planck Institute for Dynamics of Complex Technical Systems, Molecular Simulations and Design Group, Sandtorstrasse 1, 39106 Magdeburg, Germany
| | - Brian J Rodriguez
- School of Physics and Conway Institute of Biomolecular and Biomedical Research, University College Dublin (UCD), Dublin, Ireland
| | - Grace G Morgan
- School of Chemistry, University College Dublin (UCD), Dublin, Ireland
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32
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Liu Z, Wang YX, Fang YH, Qin SX, Wang ZM, Jiang SD, Gao S. Electric field manipulation enhanced by strong spin-orbit coupling: promoting rare-earth ions as qubits. Natl Sci Rev 2020; 7:1557-1563. [PMID: 34691488 PMCID: PMC8288692 DOI: 10.1093/nsr/nwaa148] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/22/2020] [Accepted: 06/22/2020] [Indexed: 11/12/2022] Open
Abstract
Quantum information processing based on magnetic ions has potential for applications as the ions can be modified in their electronic properties and assembled by a variety of chemical methods. For these systems to achieve individual spin addressability and high energy efficiency, we exploited the electric field as a tool to manipulate the quantum behaviours of the rare-earth ion which has strong spin-orbit coupling. A Ce:YAG single crystal was employed with considerations to the dynamics and the symmetry requirements. The Stark effect of the Ce3+ ion was observed and measured. When demonstrated as a quantum phase gate, the electric field manipulation exhibited high efficiency which allowed up to 57 π/2 operations before decoherence with optimized field direction. It was also utilized to carry out quantum bang-bang control, as a method of dynamic decoupling, and the refined Deutsch-Jozsa algorithm. Our experiments highlighted rare-earth ions as potentially applicable qubits because they offer enhanced spin-electric coupling which enables high-efficiency quantum manipulation.
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Affiliation(s)
- Zheng Liu
- Beijing National Laboratory of Molecular Science, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Ye-Xin Wang
- Beijing National Laboratory of Molecular Science, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yu-Hui Fang
- Beijing National Laboratory of Molecular Science, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Si-Xue Qin
- Department of Physics, Chongqing University, Chongqing 401331, China
| | - Zhe-Ming Wang
- Beijing National Laboratory of Molecular Science, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Shang-Da Jiang
- Beijing National Laboratory of Molecular Science, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Song Gao
- Beijing National Laboratory of Molecular Science, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Beijing Key Laboratory of Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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33
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Mondal A, Roy S, Konar S. Remarkable Energy Barrier for Magnetization Reversal in 3D and 2D Dysprosium-Chloranilate-Based Coordination Polymers. Chemistry 2020; 26:8774-8783. [PMID: 32315101 DOI: 10.1002/chem.202000438] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/16/2020] [Indexed: 12/26/2022]
Abstract
Herein, two coordination polymers (CPs) [{Dy(Cl2 An)1.5 (CH3 OH)}⋅4.5 H2 O]n (1) and [Dy(Cl2 An)1.5 (DMF)2 ]n (2), in which Cl2 An is chloranilate (2,5-dihydroxy-1,4-benzoquinone dianion), exhibiting field-induced single-molecule magnet behavior with moderate barrier of magnetization reversal are reported. Detailed structural and topological analysis disclosed that 1 has a 3D network, whereas 2 has a 2D layered-type structure. In both CPs, magnetic measurements showed weak antiferromagnetic exchange interaction between the dysprosium centers and field-induced slow magnetic relaxation with barriers of 175(9)K and 145(7)K for 1 and 2, respectively. Notably, the energy barriers of magnetization reversal of 1 and 2 are remarkable for metal-chloranilate-based 3D (1) and 2D (2) CPs. The temperature and field dependence of relaxation time indicate the presence of multiple relaxation pathways, such as direct, quantum tunneling of magnetization, Raman, and Orbach processes, in both CPs. Ab initio theoretical calculations reinforced the experimentally observed higher energy barrier in 1 as compared with 2 due to the presence of large transverse anisotropy in the ground state in the latter. The average transition magnetic moment between the computed low-lying spin-orbit states also rationalized the relaxation as Orbach and Raman processes through the first excited state. BS-DFT calculations were carried out for both CPs to provide more insight into the exchange interaction.
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Affiliation(s)
- Arpan Mondal
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, Bhopal By-pass Road, Bhauri, Bhopal, 462066, Madhya Pradesh, India
| | - Subhadip Roy
- Department of Chemistry, The ICFAI University Tripura, Kamalghat, Mohanpur, Agartala, Tripura, 799210, India
| | - Sanjit Konar
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, Bhopal By-pass Road, Bhauri, Bhopal, 462066, Madhya Pradesh, India
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34
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Yang J, Deng YF, Zhang YZ. Two azido-bridged homospin Fe(ii)/Co(ii) coordination polymers featuring single-chain magnet behavior. Dalton Trans 2020; 49:4805-4810. [PMID: 32211706 DOI: 10.1039/d0dt00181c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Two azido-bridged homospin Fe(ii)/Co(ii) coordination polymers [Fe2(Bzp)2(N3)4]n (1) and [Co4(Bzp)4(N3)8·(MeOH)2]n (2) (bzp = 2-benzoylpyridine) are prepared, which consist of one-dimensional neutral chains with pure EO-azido (μ2-1,1-N3) bridges. Magnetically, both 1 and 2 exhibit considerable intrachain ferromagnetic interactions which benefit from the EO-azido bridging mode, leading to typical single-chain magnet (SCM) behavior under both the "infinite-size" and "finite-size" regime and pronounced hysteresis loops. As far as the bridging network is concerned, complex 1 represents not only a rare example of homospin Fe(ii)-based SCMs but also the first Fe(ii) chain compound with pure EO-azido bridges.
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Affiliation(s)
- Jiong Yang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, P. R. China.
| | - Yi-Fei Deng
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, P. R. China.
| | - Yuan-Zhu Zhang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, P. R. China.
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35
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Böhme M, Schuch D, Buchholz A, Görls H, Plass W. Spin Interactions and Magnetic Anisotropy in a Triangular Nickel(II) Complex with Triaminoguanidine Ligand Framework. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.201900288] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Michael Böhme
- Institut für Anorganische und Analytische Chemie Friedrich‐Schiller‐Universität Jena Humboldtstraße 8 07743 Jena Germany
| | - Dirk Schuch
- Institut für Anorganische und Analytische Chemie Friedrich‐Schiller‐Universität Jena Humboldtstraße 8 07743 Jena Germany
| | - Axel Buchholz
- Institut für Anorganische und Analytische Chemie Friedrich‐Schiller‐Universität Jena Humboldtstraße 8 07743 Jena Germany
| | - Helmar Görls
- Institut für Anorganische und Analytische Chemie Friedrich‐Schiller‐Universität Jena Humboldtstraße 8 07743 Jena Germany
| | - Winfried Plass
- Institut für Anorganische und Analytische Chemie Friedrich‐Schiller‐Universität Jena Humboldtstraße 8 07743 Jena Germany
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36
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Long J, Ivanov MS, Khomchenko VA, Mamontova E, Thibaud JM, Rouquette J, Beaudhuin M, Granier D, Ferreira RAS, Carlos LD, Donnadieu B, Henriques MSC, Paixão JA, Guari Y, Larionova J. Room temperature magnetoelectric coupling in a molecular ferroelectric ytterbium(III) complex. Science 2020; 367:671-676. [DOI: 10.1126/science.aaz2795] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 12/20/2019] [Indexed: 11/02/2022]
Abstract
Magnetoelectric (ME) materials combine magnetic and electric polarizabilities in the same phase, offering a basis for developing high-density data storage and spintronic or low-consumption devices owing to the possibility of triggering one property with the other. Such applications require strong interaction between the constitutive properties, a criterion that is rarely met in classical inorganic ME materials at room temperature. We provide evidence of a strong ME coupling in a paramagnetic ferroelectric lanthanide coordination complex with magnetostrictive phenomenon. The properties of this molecular material suggest that it may be competitive with inorganic magnetoelectrics.
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Affiliation(s)
- Jérôme Long
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Maxim S. Ivanov
- CFisUC, Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal
| | | | - Ekaterina Mamontova
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Jean-Marc Thibaud
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Jérôme Rouquette
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Mickaël Beaudhuin
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Dominique Granier
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Rute A. S. Ferreira
- Physics Department and CICECO–Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Luis D. Carlos
- Physics Department and CICECO–Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Bruno Donnadieu
- Fédération de Recherche Chimie Balard–FR3105, Université de Montpellier, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | | | - José António Paixão
- CFisUC, Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal
| | - Yannick Guari
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Joulia Larionova
- Institut Charles Gerhardt Montpellier, UMR 5253, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France
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37
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Houard F, Evrard Q, Calvez G, Suffren Y, Daiguebonne C, Guillou O, Gendron F, Le Guennic B, Guizouarn T, Dorcet V, Mannini M, Bernot K. Chiral Supramolecular Nanotubes of Single‐Chain Magnets. Angew Chem Int Ed Engl 2020; 59:780-784. [DOI: 10.1002/anie.201913019] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Felix Houard
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Quentin Evrard
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Guillaume Calvez
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Yan Suffren
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Carole Daiguebonne
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Olivier Guillou
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Frédéric Gendron
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Boris Le Guennic
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Thierry Guizouarn
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Vincent Dorcet
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Matteo Mannini
- Laboratory for Molecular Magnetism (LA.M.M.)Dipartimento di Chimica “Ugo Schiff”Università degli Studi di FirenzeINSTM, UdR Firenze Via della Lastruccia n. 3 Sesto Fiorentino (FI) 50019 Italy
| | - Kevin Bernot
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
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38
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Yu KX, Ding YS, Zhai YQ, Han T, Zheng YZ. Equatorial coordination optimization for enhanced axiality of mononuclear Dy(iii) single-molecule magnets. Dalton Trans 2020; 49:3222-3227. [DOI: 10.1039/d0dt00011f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The optimization of equatorial sites leads to significant improvement of the magnetic properties of Dy(iii) SMMs.
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Affiliation(s)
- Ke-Xin Yu
- Frontier Institute of Science and Technology (FIST)
- School of Science
- Research Institute of Xi'an Jiaotong University (Zhejiang)
- State Key Laboratory of Mechanical Behavior for Materials
- MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter
| | - You-Song Ding
- Frontier Institute of Science and Technology (FIST)
- School of Science
- Research Institute of Xi'an Jiaotong University (Zhejiang)
- State Key Laboratory of Mechanical Behavior for Materials
- MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter
| | - Yuan-Qi Zhai
- Frontier Institute of Science and Technology (FIST)
- School of Science
- Research Institute of Xi'an Jiaotong University (Zhejiang)
- State Key Laboratory of Mechanical Behavior for Materials
- MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter
| | - Tian Han
- Frontier Institute of Science and Technology (FIST)
- School of Science
- Research Institute of Xi'an Jiaotong University (Zhejiang)
- State Key Laboratory of Mechanical Behavior for Materials
- MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter
| | - Yan-Zhen Zheng
- Frontier Institute of Science and Technology (FIST)
- School of Science
- Research Institute of Xi'an Jiaotong University (Zhejiang)
- State Key Laboratory of Mechanical Behavior for Materials
- MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter
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39
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Herrmann C. Electronic Communication as a Transferable Property of Molecular Bridges? J Phys Chem A 2019; 123:10205-10223. [PMID: 31380640 DOI: 10.1021/acs.jpca.9b05618] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Electronic communication through molecular bridges is important for different types of experiments, such as single-molecule conductance, electron transfer, superexchange spin coupling, and intramolecular singlet fission. In many instances, the chemical structure of the bridge determines how the two parts it is connecting communicate, and does so in ways that are transferable between these different manifestations (for example, high conductance often correlates with strong antiferromagnetic spin coupling, and low conductance due to destructive quantum interference correlates with ferromagnetic coupling). Defining electronic communication as a transferable property of the bridge can help transfer knowledge between these different areas of research. Examples and limits of such transferability are discussed here, along with some possible directions for future research, such as employing spin-coupled and mixed-valence systems as structurally well-controlled proxies for understanding molecular conductance and for validating first-principles theoretical methodologies, building conceptual understanding for the growing experimental work on intramolecular singlet fission, and developing measures for the transferability of electronic communication as a bridge property.
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Affiliation(s)
- Carmen Herrmann
- Department of Chemistry , University of Hamburg , Martin-Luther-King-Platz 6 , Hamburg 20146 , Germany
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40
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Robert J, Parizel N, Turek P, Boudalis AK. Polyanisotropic Magnetoelectric Coupling in an Electrically Controlled Molecular Spin Qubit. J Am Chem Soc 2019; 141:19765-19775. [DOI: 10.1021/jacs.9b09101] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jérôme Robert
- Institut de Chimie de Strasbourg (UMR 7177, CNRS-Unistra), Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, F-67081 Strasbourg, France
- Sorbonne Université, CNRS, Laboratoire Jean Perrin, LJP, F-75005 Paris, France
| | - Nathalie Parizel
- Institut de Chimie de Strasbourg (UMR 7177, CNRS-Unistra), Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, F-67081 Strasbourg, France
| | - Philippe Turek
- Institut de Chimie de Strasbourg (UMR 7177, CNRS-Unistra), Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, F-67081 Strasbourg, France
| | - Athanassios K. Boudalis
- Institut de Chimie de Strasbourg (UMR 7177, CNRS-Unistra), Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, F-67081 Strasbourg, France
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41
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Houard F, Evrard Q, Calvez G, Suffren Y, Daiguebonne C, Guillou O, Gendron F, Le Guennic B, Guizouarn T, Dorcet V, Mannini M, Bernot K. Chiral Supramolecular Nanotubes of Single‐Chain Magnets. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201913019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Felix Houard
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Quentin Evrard
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Guillaume Calvez
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Yan Suffren
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Carole Daiguebonne
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Olivier Guillou
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Frédéric Gendron
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Boris Le Guennic
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Thierry Guizouarn
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Vincent Dorcet
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
| | - Matteo Mannini
- Laboratory for Molecular Magnetism (LA.M.M.)Dipartimento di Chimica “Ugo Schiff”Università degli Studi di FirenzeINSTM, UdR Firenze Via della Lastruccia n. 3 Sesto Fiorentino (FI) 50019 Italy
| | - Kevin Bernot
- Univ RennesINSA RennesCNRSISCR (Institut des Sciences Chimiques de Rennes)UMR 6226 35000 Rennes France
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42
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Miao H, Li HQ, Shen FX, Wei HY, Wang BL, Wang XY. A family of lanthanide complexes with a bis-tridentate nitronyl nitroxide radical: syntheses, structures and magnetic properties. Dalton Trans 2019; 48:10337-10345. [PMID: 31211300 DOI: 10.1039/c9dt01397k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Eleven new lanthanide complexes based on a bis-tridentate nitronyl nitroxide radical NIT-Pm2Py (2-(4,6-di(pyridin-2-yl)pyrimidin-2-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-1-oxy-3-oxide), namely (NIT-Pm2Py)Ln(hfac)3 (Ln = Gd (1Gd), Tb (2Tb), Dy (3Dy), Ho (4Ho), Er (5Er), Yb (6Yb)), [(NIT-Pm2Py)Ln2(hfac)6]·xH2O (Ln = Gd (7Gd), Tb (8Tb), Ho (10Ho), x = 0.5 for 7Gd and 1 for 8Tb and 10Ho) and (NIT-Pm2Py)Ln2(hfac)6 (Ln = Dy (9Dy), Er (11Er)) were prepared and characterized. These complexes can be selectively prepared by controlling the reaction ratio of Ln(hfac)3·2H2O to the radical ligand NIT-Pm2Py. Single crystal X-ray crystallographic analyses confirmed that 1Gd-6Yb are isostructural 2p-4f LnIII-radical complexes, in which the NIT-Pm2Py radical acts as a terminal tridentate ligand chelating to one LnIII ion. On the other hand, 7Gd-11Er are isostructural 4f-2p-4f LnIII-radical-LnIII complexes with the NIT-Pm2Py acting as a bridging ligand between two LnIII ions. 7Gd-11Er represent a rare family of complexes showing the NIT bridged 4f-2p-4f three-spin motif. Alternating-current (ac) magnetic susceptibility investigations revealed that complex 6Yb exhibits field-induced frequency dependence, suggesting a possible field-induced single-molecule magnet behavior. Ab initio calculations were performed on all these complexes. The fitting of the magnetic susceptibilities of these complexes indicates weak antiferromagnetic coupling between the LnIII and NIT radical.
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Affiliation(s)
- Hao Miao
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
| | - Hong-Qing Li
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
| | - Fu-Xing Shen
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
| | - Hai-Yan Wei
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China.
| | - Bao-Lin Wang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China.
| | - Xin-Yi Wang
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
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43
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Roy S, Hari N, Mohanta S. Synthesis, Crystal Structures, Magnetic Properties, and Fluorescence of Two Heptanuclear Co
III
4
Ln
III
3
Compounds (Ln = Gd
III
, Dy
III
): Multiple Relaxation Dynamics in the Dy
III
Analogue. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900383] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shuvayan Roy
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700 009 Kolkata India
| | - Nairita Hari
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700 009 Kolkata India
| | - Sasankasekhar Mohanta
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700 009 Kolkata India
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44
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Atzori M, Sessoli R. The Second Quantum Revolution: Role and Challenges of Molecular Chemistry. J Am Chem Soc 2019; 141:11339-11352. [PMID: 31287678 DOI: 10.1021/jacs.9b00984] [Citation(s) in RCA: 204] [Impact Index Per Article: 40.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Implementation of modern Quantum Technologies might benefit from the remarkable quantum properties shown by molecular spin systems. In this Perspective, we highlight the role that molecular chemistry can have in the current second quantum revolution, i.e., the use of quantum physics principles to create new quantum technologies, in this specific case by means of molecular components. Herein, we briefly review the current status of the field by identifying the key advances recently made by the molecular chemistry community, such as for example the design of molecular spin qubits with long spin coherence and the realization of multiqubit architectures for quantum gates implementation. With a critical eye to the current state-of-the-art, we also highlight the main challenges needed for the further advancement of the field toward quantum technologies development.
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Affiliation(s)
- Matteo Atzori
- Laboratoire National des Champs Magnétiques Intenses, UPR 3228-CNRS , F-38042 Grenoble , France
| | - Roberta Sessoli
- Dipartimento di Chimica "Ugo Schiff" & INSTM RU , Università degli Studi di Firenze , I-50019 Sesto Fiorentino , Italy
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45
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Rosaleny LE, Zinovjev K, Tuñón I, Gaita-Ariño A. A first peek into sub-picosecond dynamics of spin energy levels in magnetic biomolecules. Phys Chem Chem Phys 2019; 21:10908-10913. [PMID: 31080970 DOI: 10.1039/c9cp01909j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We estimate the time- and temperature-evolution of spin energy levels in a metallopeptide by combining molecular dynamics with crystal field analysis. Fluctuations of tens of cm-1 for spin energy levels at fs times gradually average out at longer times. We confirm that local vibrations are key in spin dynamics.
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Affiliation(s)
- Lorena E Rosaleny
- Departament de Química Física, Universitat de València, 46100 Burjassot, Spain. and Instituto de Ciencia Molecular, Universitat de València, 46980 Paterna, Spain
| | - Kirill Zinovjev
- Departament de Química Física, Universitat de València, 46100 Burjassot, Spain.
| | - Iñaki Tuñón
- Departament de Química Física, Universitat de València, 46100 Burjassot, Spain.
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46
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Affiliation(s)
- Joris van Slageren
- Institute of Physical Chemistry, University of Stuttgart, Stuttgart, Germany.
- Center for Integrated Quantum Science and Technology, University of Stuttgart, Stuttgart, Germany.
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