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Song X, Ge Y, Xu H, Bao S, Wang L, Xue X, Yu Q, Xing Y, Wu Z, Xie K, Zhu T, Zhang P, Liu Y, Wang Z, Tie Z, Ma J, Jin Z. Ternary Eutectic Electrolyte-Assisted Formation and Dynamic Breathing Effect of the Solid-Electrolyte Interphase for High-Stability Aqueous Magnesium-Ion Full Batteries. J Am Chem Soc 2024; 146:7018-7028. [PMID: 38412508 DOI: 10.1021/jacs.4c00227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Aqueous rechargeable magnesium batteries hold immense potential for intrinsically safe, cost-effective, and sustainable energy storage. However, their viability is constrained by a narrow voltage range and suboptimal compatibility between the electrolyte and electrodes. Herein, we introduce an innovative ternary deep eutectic Mg-ion electrolyte composed of MgCl2·6H2O, acetamide, and urea in a precisely balanced 1:1:7 molar ratio. This formulation was optimized by leveraging competitive solvation effects between Mg2+ ions and two organic components. The full batteries based on this ternary eutectic electrolyte, Mn-doped sodium vanadate (Mn-NVO) anode, and copper hexacyanoferrate cathode exhibited an elevated voltage plateau and high rate capability and showcased stable cycling performance. Ex-situ characterizations unveiled the Mg2+ storage mechanism of Mn-NVO involving initial extraction of Na+ followed by subsequent Mg2+ intercalation/deintercalation. Detailed spectroscopic analyses illuminated the formation of a pivotal solid-electrolyte interphase on the anode surface. Moreover, the solid-electrolyte interphase demonstrated a dynamic adsorption/desorption behavior, referred to as the "breathing effect", which substantially mitigated undesired dissolution and side reactions of electrode materials. These findings underscore the crucial role of rational electrolyte design in fostering the development of a favorable solid-electrolyte interphase that can significantly enhance compatibility between electrode materials and electrolytes, thus propelling advancements in aqueous multivalent-ion batteries.
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Affiliation(s)
- Xinmei Song
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yang Ge
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Hao Xu
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Songsong Bao
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Lei Wang
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Xiaolan Xue
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Qianchuan Yu
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yizhi Xing
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Zuoao Wu
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Kefeng Xie
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Tangsong Zhu
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Pengbo Zhang
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yuzhu Liu
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Zhangjian Wang
- Jiangsu BTR Nano Technology Co., Ltd., 519 Jiangdong Avenue, Jintan District, Changzhou, Jiangsu 213200, P. R. China
| | - Zuoxiu Tie
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Jing Ma
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Zhong Jin
- State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
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Bahrami F, Hu X, Du Y, Lebedev OI, Wang C, Luetkens H, Fabbris G, Graf MJ, Haskel D, Ran Y, Tafti F. First demonstration of tuning between the Kitaev and Ising limits in a honeycomb lattice. SCIENCE ADVANCES 2022; 8:eabl5671. [PMID: 35319975 PMCID: PMC8942356 DOI: 10.1126/sciadv.abl5671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 02/01/2022] [Indexed: 06/02/2023]
Abstract
Recent observations of novel spin-orbit coupled states have generated interest in 4d/5d transition metal systems. A prime example is the [Formula: see text] state in iridate materials and α-RuCl3 that drives Kitaev interactions. Here, by tuning the competition between spin-orbit interaction (λSOC) and trigonal crystal field (ΔT), we restructure the spin-orbital wave functions into a previously unobserved [Formula: see text] state that drives Ising interactions. This is done via a topochemical reaction that converts Li2RhO3 to Ag3LiRh2O6. Using perturbation theory, we present an explicit expression for the [Formula: see text] state in the limit ΔT ≫ λSOC realized in Ag3LiRh2O6, different from the conventional [Formula: see text] state in the limit λSOC ≫ ΔT realized in Li2RhO3. The change of ground state is followed by a marked change of magnetism from a 6 K spin-glass in Li2RhO3 to a 94 K antiferromagnet in Ag3LiRh2O6.
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Affiliation(s)
- Faranak Bahrami
- Department of Physics, Boston College, Chestnut Hill, MA 02467, USA
| | - Xiaodong Hu
- Department of Physics, Boston College, Chestnut Hill, MA 02467, USA
| | - Yonghua Du
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Oleg I. Lebedev
- Laboratoire CRISMAT, ENSICAEN-CNRS UMR6508, 14050 Caen, France
| | - Chennan Wang
- Laboratory for Muon Spin Spectroscopy (LMU), Paul Scherrer Institute (PSI), CH-5232 Villigen, Switzerland
| | - Hubertus Luetkens
- Laboratory for Muon Spin Spectroscopy (LMU), Paul Scherrer Institute (PSI), CH-5232 Villigen, Switzerland
| | - Gilberto Fabbris
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Michael J. Graf
- Department of Physics, Boston College, Chestnut Hill, MA 02467, USA
| | - Daniel Haskel
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Ying Ran
- Department of Physics, Boston College, Chestnut Hill, MA 02467, USA
| | - Fazel Tafti
- Department of Physics, Boston College, Chestnut Hill, MA 02467, USA
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Liang H. First Principles Calculations of Electronic and Optical Properties of KSbO3 under Pressure. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2021. [DOI: 10.1134/s0036024421130112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Lalrinkima, Ekuma CE, Chibueze TC, Fomin LA, Malikov IV, Zadeng L, Rai DP. Electronic, magnetic, vibrational, and X-ray spectroscopy of inverse full-Heusler Fe 2IrSi alloy. Phys Chem Chem Phys 2021; 23:11876-11885. [PMID: 33989367 DOI: 10.1039/d1cp00418b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the electronic, magnetic, structural, vibrational, and X-ray absorption spectroscopy of the inverse full-Heusler Fe2IrSi alloy. We employed state-of-the-art first-principles computational techniques. Our ab initio calculations revealed a ferromagnetic half-metallicity with a magnetic moment of ∼5.01 μB, which follows the Slater Pauling rule. We show rich magnetic behavior due to spin-orbit coupling through the entanglement of the Fe-3d/Ir-5d orbitals. The large extension of the Ir-5d orbital and the itinerant Fe-3d states enhanced spin-orbit and electron-electron interactions, respectively. The analyses of our results reveal that electron-electron interactions are essential for the proper description of the electronic properties while spin-orbit coupling effects are vital to accurately characterize the X-ray absorption and X-ray magnetic circular dichroism spectra. We estimate the strength of the spin-orbit coupling by comparing the intensity of the white-line features at the L3 and L2 absorption edges. This led to a branching ratio that deviates strongly from the statistical ratio of 2, indicative of strong spin-orbit coupling effects in the inverse full-Heusler Fe2IrSi alloy.
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Affiliation(s)
- Lalrinkima
- Department of Physics, Mizoram University, Aizawl-796004, India and Physical Sciences Research Center (PSRC), Department of Physics, Pachhunga University College, Mizoram University, Aizawl-796001, India.
| | - C E Ekuma
- Department of Physics, Lehigh University, Bethlehem, PA 18015, USA.
| | - T C Chibueze
- Department of Physics & Astronomy, University of Nigeria, Nsukka, 410001, Nigeria
| | - L A Fomin
- Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences (RAS), 142432, Chernogolovka, Russia
| | - I V Malikov
- Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences (RAS), 142432, Chernogolovka, Russia
| | - L Zadeng
- Department of Physics, Mizoram University, Aizawl-796004, India
| | - D P Rai
- Physical Sciences Research Center (PSRC), Department of Physics, Pachhunga University College, Mizoram University, Aizawl-796001, India.
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Li RS, Xie Z, Kong LY, Hou SX, Luo JJ, Xin DQ. Intermediate occupation numbers for 5f electrons in a Pu and U mixed oxide. Phys Chem Chem Phys 2021; 23:14725-14736. [PMID: 34190242 DOI: 10.1039/d1cp01149a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In order to reveal the correlation effect on the electronic properties in particular 5f electron occupation numbers of Pu/U ions in a (Pu,U) mixed oxide-PuUO4, a first principles calculation is performed by using density functional theory (DFT) plus a dynamical mean field theory (DMFT) scheme with the spin-orbit coupling (SOC) and on-site Coulomb repulsion for correlation effect due to localized Pu/U 5f orbitals. Results demonstrate that Pu/U 5f electron occupation numbers in the ground state of PuUO4 are mainly composed of 5f4/5f5 and 5f2/5f3 configurations, and exhibiting the intermediate occupation (IO) numbers with average 5f occupation numbers of about nf = 4.879 and 2.423 for Pu and U ions, respectively, irrespective of different Pu and U lattice sites in PuUO4. Pu 5f j = 5/2 and j = 7/2 components are in moderately and weakly correlated states, respectively, while U 5f j = 5/2 and j = 7/2 manifolds are both in weakly correlated states. jj and LS coupling schemes are feasible for Pu and U 5f electrons, respectively. In order to directly compare with the experimental angle-resolved photoemission spectrum (ARPES), we also estimate the momentum-resolved electronic spectrum function for this system.
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Affiliation(s)
- Ru-Song Li
- Shaanxi Engineering Research Center of Controllable Neutron Source, School of Science, Xijing University, Xi'an 710123, China.
| | - Zheng Xie
- Shaanxi Engineering Research Center of Controllable Neutron Source, School of Science, Xijing University, Xi'an 710123, China.
| | - Ling-Yun Kong
- Shaanxi Engineering Research Center of Controllable Neutron Source, School of Science, Xijing University, Xi'an 710123, China.
| | - Su-Xia Hou
- Shaanxi Engineering Research Center of Controllable Neutron Source, School of Science, Xijing University, Xi'an 710123, China.
| | - Ji-Jun Luo
- Shaanxi Engineering Research Center of Controllable Neutron Source, School of Science, Xijing University, Xi'an 710123, China.
| | - Du-Qiang Xin
- Shaanxi Engineering Research Center of Controllable Neutron Source, School of Science, Xijing University, Xi'an 710123, China.
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Zoghlin E, Porter Z, Britner S, Husremovic S, Choi Y, Haskel D, Laurita G, Wilson SD. Mapping the structural, magnetic and electronic behavior of (Eu 1- x Ca x ) 2Ir 2O 7 across a metal-insulator transition. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 33:055601. [PMID: 33169728 DOI: 10.1088/1361-648x/abbf2b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, we employ bulk electronic properties characterization and x-ray scattering/spectroscopy techniques to map the structural, magnetic and electronic properties of (Eu1-x Ca x )2Ir2O7 as a function of Ca-doping. As expected, the metal-insulator transition temperature, T MIT, decreases with Ca-doping until a metallic state is realized down to 2 K. In contrast, T AFM becomes decoupled from the MIT and (likely short-range) AFM order persists into the metallic regime. This decoupling is understood as a result of the onset of an electronically phase separated state, the occurrence of which seemingly depends on both synthesis method and rare earth site magnetism. PDF analysis suggests that electronic phase separation occurs without accompanying chemical phase segregation or changes in the short-range crystallographic symmetry while synchrotron x-ray diffraction confirms that there is no change in the long-range crystallographic symmetry. X-ray absorption measurements confirm the J eff = ½ character of (Eu1-x Ca x )2Ir2O7. Surprisingly these measurements also indicate a net electron doping, rather than the expected hole doping, indicating a compensatory mechanism. Lastly, XMCD measurements show a weak Ir magnetic polarization that is largely unaffected by Ca-doping. Keywords: term, term, term.
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Affiliation(s)
- Eli Zoghlin
- Materials Department, University of California, Santa Barbara, California 93106, United States of America
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Wang H, Qi J, Yang N, Cui W, Wang J, Li Q, Zhang Q, Yu X, Gu L, Li J, Yu R, Huang K, Song S, Feng S, Wang D. Dual-Defects Adjusted Crystal-Field Splitting of LaCo 1-x Ni x O 3-δ Hollow Multishelled Structures for Efficient Oxygen Evolution. Angew Chem Int Ed Engl 2020; 59:19691-19695. [PMID: 32583547 DOI: 10.1002/anie.202007077] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Indexed: 11/11/2022]
Abstract
To boost the performance for various applications, a rational bottom-up design on materials is necessary. The defect engineering on nanoparticle at the atomic level can efficiently tune the electronic behavior, which offers great opportunities in enhancing the catalytic performance. In this paper, we optimized the surface oxygen vacancy concentration and created the lattice distortion in rare-earth-based perovskite oxide through gradient replacement of the B site with valence alternated element. The dual defects make the electron spin state transit from low spin state to high spin state, thus decreasing the charge transport resistance. Furthermore, assembly the modified nanoparticle subunits into the micro-sized hollow multishelled structures can provide porous shells, abundant interior space and effective contact, which enables an enhanced mass transfer and a shorter charge transport path. As a result, the systemic design in the electronic and nano-micro structures for catalyst has brought an excellent oxygen evolution performance.
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Affiliation(s)
- Huan Wang
- Department of Physical Chemistry, School of Metallurgical and Ecological Engineering, University of Science & Technology Beijing, Beijing, 100083, P. R. China.,State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Jian Qi
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Nailiang Yang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Wei Cui
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jiangyan Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qinghao Li
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Qinghua Zhang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Xiqian Yu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Lin Gu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Jiong Li
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
| | - Ranbo Yu
- Department of Physical Chemistry, School of Metallurgical and Ecological Engineering, University of Science & Technology Beijing, Beijing, 100083, P. R. China
| | - Keke Huang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Shuyan Song
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Shouhua Feng
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Dan Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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Wang H, Qi J, Yang N, Cui W, Wang J, Li Q, Zhang Q, Yu X, Gu L, Li J, Yu R, Huang K, Song S, Feng S, Wang D. Dual‐Defects Adjusted Crystal‐Field Splitting of LaCo
1−
x
Ni
x
O
3−
δ
Hollow Multishelled Structures for Efficient Oxygen Evolution. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007077] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Huan Wang
- Department of Physical Chemistry School of Metallurgical and Ecological Engineering University of Science & Technology Beijing Beijing 100083 P. R. China
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Jian Qi
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Nailiang Yang
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Wei Cui
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Jiangyan Wang
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Qinghao Li
- Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Qinghua Zhang
- Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Xiqian Yu
- Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Lin Gu
- Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Jiong Li
- Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201210 P. R. China
| | - Ranbo Yu
- Department of Physical Chemistry School of Metallurgical and Ecological Engineering University of Science & Technology Beijing Beijing 100083 P. R. China
| | - Keke Huang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin University Changchun 130012 P. R. China
| | - Shuyan Song
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
| | - Shouhua Feng
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin University Changchun 130012 P. R. China
| | - Dan Wang
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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Tyagi S, Sathe VG, Sharma G, Phase DM, Reddy VR. Strain healing of spin-orbit coupling:a cause for enhanced magnetic moment in epitaxial SrRuO 3 thin films. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:305501. [PMID: 32217827 DOI: 10.1088/1361-648x/ab8424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Enhanced magnetic moment and coercivity in SrRuO3 thin films are significant issues for advanced technological usages and hence are researched extensively in recent times. Most of the previous reports on thin films with enhanced magnetic moment attributed it to the high spin state. Our magnetization results show high magnetic moment of 3.3 μB/Ru ion in the epitaxial thin films grown on LSAT substrate against 1.2 μB/Ru ion observed in bulk compound. Contrary to the previous reports the Ru ions are found to be in low spin state and the orbital moment is shown to be contributing significantly in the enhancement of magnetic moment. We employed x-ray absorption spectroscopy and resonant valance band spectroscopy to probe the spin state and orbital contributions in these films. The existence of strong spin-orbit coupling responsible for the de-quenching of the 4d orbitals is confirmed by the observation of the non-statistical large branching ratio at the Ru M2,3 absorption edges. X-ray magnetic circular dichroism studies performed at the Ru M2,3 edges provided direct evidence of significant contribution of orbital moment in the film grown on LSAT. The relaxation of orbital quenching by strain engineering provides a new tool for enhancing magnetic moment and strain disorder is shown to be an efficient mean to control the spin-orbit coupling.
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Affiliation(s)
- Shekhar Tyagi
- UGC-DAE Consortium for Scientific Research, University Campus, Khandwa Road, Indore-452001, India
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Kim Y, Song GY, Nandi R, Cho JY, Heo J, Cho DY. Phase identification of vanadium oxide thin films prepared by atomic layer deposition using X-ray absorption spectroscopy. RSC Adv 2020; 10:26588-26593. [PMID: 35519762 PMCID: PMC9055385 DOI: 10.1039/d0ra04384b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 07/10/2020] [Indexed: 11/21/2022] Open
Abstract
The chemical and local structures of vanadium oxide (VOx) thin films prepared by atomic layer deposition (ALD) were investigated by soft X-ray absorption spectroscopy. It is shown that the as-deposited film was a mixture of VO2 and V2O5 in disordered form, while the chemistry changed significantly after heat treatment, subject to the different gas environment. Forming gas (95% N2 + 5% H2) annealing resulted in a VO2 composition, consisting mostly of the VO2 (B) phase with small amount of the VO2 (M) phase, whereas O2 annealing resulted in the V2O5 phase. An X-ray circular magnetic dichroism study further revealed the absence of ferromagnetic ordering, confirming the absence of oxygen vacancies despite the reduction of V ions in VO2 (V4+) with respect to the precursor used in the ALD (V5+). This implies that the prevalence of VO2 in the ALD films cannot be attributed to a simple oxygen-deficiency-related reduction scheme but should be explained by the metastability of the local VO2 structures. X-ray absorption spectroscopy reveals the local structures of atomic-layer-deposited vanadium oxide films subject to heat treatments.![]()
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Affiliation(s)
- Yejin Kim
- IPIT, Department of Physics, Jeonbuk National University Jeonju 54896 Korea
| | - Gwang Yeom Song
- Department of Materials Science and Engineering, Optoelectronics Convergence Research Center, Chonnam National University Gwangju 61186 Republic of Korea
| | - Raju Nandi
- Department of Materials Science and Engineering, Optoelectronics Convergence Research Center, Chonnam National University Gwangju 61186 Republic of Korea
| | - Jae Yu Cho
- Department of Materials Science and Engineering, Optoelectronics Convergence Research Center, Chonnam National University Gwangju 61186 Republic of Korea
| | - Jaeyeong Heo
- Department of Materials Science and Engineering, Optoelectronics Convergence Research Center, Chonnam National University Gwangju 61186 Republic of Korea
| | - Deok-Yong Cho
- IPIT, Department of Physics, Jeonbuk National University Jeonju 54896 Korea
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Yang J, Hao L, Meyers D, Dasa T, Xu L, Horak L, Shafer P, Arenholz E, Fabbris G, Choi Y, Haskel D, Karapetrova J, Kim JW, Ryan PJ, Xu H, Batista CD, Dean MPM, Liu J. Strain-Modulated Slater-Mott Crossover of Pseudospin-Half Square-Lattice in (SrIrO_{3})_{1}/(SrTiO_{3})_{1} Superlattices. PHYSICAL REVIEW LETTERS 2020; 124:177601. [PMID: 32412287 DOI: 10.1103/physrevlett.124.177601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 04/03/2020] [Indexed: 06/11/2023]
Abstract
We report on the epitaxial strain-driven electronic and antiferromagnetic modulations of a pseudospin-half square-lattice realized in superlattices of (SrIrO_{3})_{1}/(SrTiO_{3})_{1}. With increasing compressive strain, we find the low-temperature insulating behavior to be strongly suppressed with a corresponding systematic reduction of both the Néel temperature and the staggered moment. However, despite such a suppression, the system remains weakly insulating above the Néel transition. The emergence of metallicity is observed under large compressive strain but only at temperatures far above the Néel transition. These behaviors are characteristics of the Slater-Mott crossover regime, providing a unique experimental model system of the spin-half Hubbard Hamiltonian with a tunable intermediate coupling strength.
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Affiliation(s)
- Junyi Yang
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Lin Hao
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Derek Meyers
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Tamene Dasa
- Department of Material Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Liubin Xu
- Department of Material Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Lukas Horak
- Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 121 16 Prague, Czech Republic
| | - Padraic Shafer
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Elke Arenholz
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Materials Science & Engineering, University of California, Berkeley, California 94720, USA
| | - Gilberto Fabbris
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, 60439, USA
| | - Yongseong Choi
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, 60439, USA
| | - Daniel Haskel
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, 60439, USA
| | - Jenia Karapetrova
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, 60439, USA
| | - Jong-Woo Kim
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, 60439, USA
| | - Philip J Ryan
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, 60439, USA
| | - Haixuan Xu
- Department of Material Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Cristian D Batista
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Mark P M Dean
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Jian Liu
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
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13
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Liu J, Pedersen KS, Greer SM, Oyarzabal I, Mondal A, Hill S, Wilhelm F, Rogalev A, Tressaud A, Durand E, Long JR, Clérac R. Access to Heteroleptic Fluorido‐Cyanido Complexes with a Large Magnetic Anisotropy by Fluoride Abstraction. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jun‐Liang Liu
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
- Current address: Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education School of Chemistry Sun Yat-Sen University Guangzhou 510275 P. R. China
| | - Kasper S. Pedersen
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
- Current address: Department of Chemistry Technical University of Denmark 2800, Kgs. Lyngby Denmark
| | - Samuel M. Greer
- Department of Chemistry Florida State University
- National High Magnetic Field Laboratory Florida State University Tallahassee FL 32306 USA
| | - Itziar Oyarzabal
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
- Chemistry Faculty University of the Basque Country UPV/EHU 20018 Donostia-San Sebastián Spain
| | - Abhishake Mondal
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
- Current address: Solid State and Structural Chemistry Unit Indian Institute of Science C.V. Raman Road Bangalore 560012 India
| | - Stephen Hill
- Department of Physics Florida State University
- National High Magnetic Field Laboratory Florida State University Tallahassee FL 32306 USA
| | | | - Andrei Rogalev
- ESRF-The European Synchrotron 38043 Grenoble Cedex 9 France
| | | | | | - Jeffrey R. Long
- Department of Chemistry University of California Berkeley USA
- Department of Chemical and Biomolecular Engineering University of California Berkeley USA
- Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Rodolphe Clérac
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
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14
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Liu JL, Pedersen KS, Greer SM, Oyarzabal I, Mondal A, Hill S, Wilhelm F, Rogalev A, Tressaud A, Durand E, Long JR, Clérac R. Access to Heteroleptic Fluorido-Cyanido Complexes with a Large Magnetic Anisotropy by Fluoride Abstraction. Angew Chem Int Ed Engl 2020; 59:10306-10310. [PMID: 32080955 DOI: 10.1002/anie.201914934] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Indexed: 11/07/2022]
Abstract
Silicon-mediated fluoride abstraction is demonstrated as a means of generating the first fluorido-cyanido transition metal complexes. This new synthetic approach is exemplified by the synthesis and characterization of the heteroleptic complexes, trans-[MIV F4 (CN)2 ]2- (M=Re, Os), obtained from their homoleptic [MIV F6 ]2- parents. As shown by combined high-field electron paramagnetic resonance spectroscopy and magnetization measurements, the partial substitution of fluoride by cyanide ligands leads to a marked increase in the magnetic anisotropy of trans-[ReF4 (CN)2 ]2- as compared to [ReF6 ]2- , reflecting the severe departure from an ideal octahedral (Oh point group) ligand field. This methodology paves the way toward the realization of new heteroleptic transition metal complexes that may be used as highly anisotropic building-blocks for the design of high-performance molecule-based magnetic materials.
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Affiliation(s)
- Jun-Liang Liu
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France.,Current address: Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Kasper S Pedersen
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France.,Current address: Department of Chemistry, Technical University of Denmark, 2800, Kgs., Lyngby, Denmark
| | - Samuel M Greer
- Department of Chemistry, Florida State University.,National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, 32306, USA
| | - Itziar Oyarzabal
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France.,Chemistry Faculty, University of the Basque Country UPV/EHU, 20018, Donostia-San Sebastián, Spain
| | - Abhishake Mondal
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France.,Current address: Solid State and Structural Chemistry Unit, Indian Institute of Science, C.V. Raman Road, Bangalore, 560012, India
| | - Stephen Hill
- Department of Physics, Florida State University.,National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, 32306, USA
| | - Fabrice Wilhelm
- ESRF-The European Synchrotron, 38043, Grenoble Cedex 9, France
| | - Andrei Rogalev
- ESRF-The European Synchrotron, 38043, Grenoble Cedex 9, France
| | - Alain Tressaud
- CNRS, ICMCB, UPR 9048, Univ. Bordeaux, 33608, Pessac, France
| | - Etienne Durand
- CNRS, ICMCB, UPR 9048, Univ. Bordeaux, 33608, Pessac, France
| | - Jeffrey R Long
- Department of Chemistry, University of California Berkeley, USA.,Department of Chemical and Biomolecular Engineering, University of California Berkeley, USA.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France
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15
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Wallace MK, LaBarre PG, Li J, Pi ST, Pickett WE, Dessau DS, Haskel D, Ramirez AP, Subramanian MA. Local Moment Instability of Os in Honeycomb Li 2.15Os 0.85O 3. Sci Rep 2018; 8:6605. [PMID: 29700362 PMCID: PMC5919924 DOI: 10.1038/s41598-018-25028-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 04/13/2018] [Indexed: 11/10/2022] Open
Abstract
Compounds with honeycomb structures occupied by strong spin orbit coupled (SOC) moments are considered to be candidate Kitaev quantum spin liquids. Here we present the first example of Os on a honeycomb structure, Li2.15(3)Os0.85(3)O3 (C2/c, a = 5.09 Å, b = 8.81 Å, c = 9.83 Å, β = 99.3°). Neutron diffraction shows large site disorder in the honeycomb layer and X-ray absorption spectroscopy indicates a valence state of Os (4.7 ± 0.2), consistent with the nominal concentration. We observe a transport band gap of Δ = 243 ± 23 meV, a large van Vleck susceptibility, and an effective moment of 0.85 μB, much lower than expected from 70% Os(+5). No evidence of long range order is found above 0.10 K but a spin glass-like peak in ac-susceptibility is observed at 0.5 K. The specific heat displays an impurity spin contribution in addition to a power law ∝T(0.63±0.06). Applied density functional theory (DFT) leads to a reduced moment, suggesting incipient itineracy of the valence electrons, and finding evidence that Li over stoichiometry leads to Os(4+)−Os(5+) mixed valence. This local picture is discussed in light of the site disorder and a possible underlying quantum spin liquid state.
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Affiliation(s)
- M K Wallace
- Department of Chemistry, Oregon State University, Corvallis, OR, 97331, USA
| | - P G LaBarre
- Department of Physics, University of California Santa Cruz, Santa Cruz, CA, 95064, USA
| | - Jun Li
- Department of Chemistry, Oregon State University, Corvallis, OR, 97331, USA
| | - S-T Pi
- Department of Physics, University of California Davis, Davis, CA, 95616, USA
| | - W E Pickett
- Department of Physics, University of California Davis, Davis, CA, 95616, USA
| | - D S Dessau
- Department of Physics, University of Colorado, Denver, CO, 80309, USA
| | - D Haskel
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - A P Ramirez
- Department of Physics, University of California Santa Cruz, Santa Cruz, CA, 95064, USA
| | - M A Subramanian
- Department of Chemistry, Oregon State University, Corvallis, OR, 97331, USA.
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16
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van Veenendaal M. Ultrafast intersystem crossings in Fe-Co Prussian blue analogues. Sci Rep 2017; 7:6672. [PMID: 28751767 PMCID: PMC5532292 DOI: 10.1038/s41598-017-06664-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 06/15/2017] [Indexed: 12/05/2022] Open
Abstract
Ultrafast spincrossover is studied in Fe-Co Prussian blue analogues using a dissipative quantum-mechanical model of a cobalt ion coupled to a breathing mode. All electronic interactions are treated on an equal footing. It is theoretically demonstrated that the divalent cobalt ion reaches 90% of the \documentclass[12pt]{minimal}
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\begin{document}$$S{\boldsymbol{=}}\frac{{\bf{3}}}{{\bf{2}}}$$\end{document}S=32 value within 20 fs after photoexciting a low-spin Co3+ ion by an iron-to-cobalt charge transfer. The doublet-to-quartet spin crossover is significantly faster than the oscillation period of the breathing mode. The system relaxes to the lowest manifold of divalent cobalt (4T1) in 150–200 fs. Strong oscillations in spin-orbit coupling and the involvement of higher-lying quartets are found.
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Affiliation(s)
- Michel van Veenendaal
- Department of Physics, Northern Illinois University, DeKalb, Illinois, 60115, USA. .,Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois, 60439, USA.
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17
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[OsF6
]
x
−
: Molecular Models for Spin-Orbit Entangled Phenomena. Chemistry 2017; 23:11244-11248. [DOI: 10.1002/chem.201702894] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Indexed: 11/07/2022]
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18
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Martins M, Wurth W. Magnetic properties of supported metal atoms and clusters. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:503002. [PMID: 27783566 DOI: 10.1088/0953-8984/28/50/503002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Clusters are small systems ranging from a few atoms up to several thousand atoms. They are of high interest in basic research, but also for applications due to their specific electronic, magnetic or chemical properties depending on size and composition. For small clusters, quantum size effects play an important role and specific material properties might be tailored by choosing a special size or composition of the cluster. Here, we review the magnetic properties of adatoms and supported small mass-selected transition-metal clusters in the few-atom limit investigated by x-ray magnetic circular dichroism spectroscopy in the soft x-ray regime. The influence of cluster size, composition, the cluster-surface and intra-cluster interaction on the spin and orbital magnetic moments will be discussed.
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Affiliation(s)
- Michael Martins
- Department of Physics, University of Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany
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19
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Pedersen KS, Bendix J, Tressaud A, Durand E, Weihe H, Salman Z, Morsing TJ, Woodruff DN, Lan Y, Wernsdorfer W, Mathonière C, Piligkos S, Klokishner SI, Ostrovsky S, Ollefs K, Wilhelm F, Rogalev A, Clérac R. Iridates from the molecular side. Nat Commun 2016; 7:12195. [PMID: 27435800 PMCID: PMC4961767 DOI: 10.1038/ncomms12195] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 06/07/2016] [Indexed: 11/09/2022] Open
Abstract
New exotic phenomena have recently been discovered in oxides of paramagnetic Ir4+ ions, widely known as ‘iridates'. Their remarkable properties originate from concerted effects of the crystal field, magnetic interactions and strong spin-orbit coupling, characteristic of 5d metal ions. Despite numerous experimental reports, the electronic structure of these materials is still challenging to elucidate, and not attainable in the isolated, but chemically inaccessible, [IrO6]8– species (the simplest molecular analogue of the elementary {IrO6}8− fragment present in all iridates). Here, we introduce an alternative approach to circumvent this problem by substituting the oxide ions in [IrO6]8− by isoelectronic fluorides to form the fluorido-iridate: [IrF6]2−. This molecular species has the same electronic ground state as the {IrO6}8− fragment, and thus emerges as an ideal model for iridates. These results may open perspectives for using fluorido-iridates as building-blocks for electronic and magnetic quantum materials synthesized by soft chemistry routes. Iridates are known to exhibit a range of exotic electronic and magnetic behaviours but it is difficult to prepare isolated [IrO6]8− species via soft chemical routes. Here, the authors isolate the isoelectronic [IrF6]2− complex, and assess it as a model and for iridate analogues.
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Affiliation(s)
- Kasper S Pedersen
- CNRS, ICMCB, UPR 9048, Pessac 33600, France.,Univ. Bordeaux, CRPP, UPR 8641, Pessac 33600, France.,CNRS, ICMCB, UPR 9048, Pessac 33600, France.,Univ. Bordeaux, ICMCB, UPR 9048, Pessac 33600, France
| | - Jesper Bendix
- Department of Chemistry, University of Copenhagen, Copenhagen DK-2100, Denmark
| | - Alain Tressaud
- CNRS, ICMCB, UPR 9048, Pessac 33600, France.,Univ. Bordeaux, ICMCB, UPR 9048, Pessac 33600, France
| | - Etienne Durand
- CNRS, ICMCB, UPR 9048, Pessac 33600, France.,Univ. Bordeaux, ICMCB, UPR 9048, Pessac 33600, France
| | - Høgni Weihe
- Department of Chemistry, University of Copenhagen, Copenhagen DK-2100, Denmark
| | - Zaher Salman
- Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institut, Villigen PSI CH-5232, Switzerland
| | - Thorbjørn J Morsing
- Department of Chemistry, University of Copenhagen, Copenhagen DK-2100, Denmark
| | | | - Yanhua Lan
- CNRS, Inst NEEL, Grenoble F-38000, France
| | | | - Corine Mathonière
- CNRS, ICMCB, UPR 9048, Pessac 33600, France.,Univ. Bordeaux, ICMCB, UPR 9048, Pessac 33600, France
| | - Stergios Piligkos
- Department of Chemistry, University of Copenhagen, Copenhagen DK-2100, Denmark
| | - Sophia I Klokishner
- Institute of Applied Physics, Academy of Sciences of Moldova, Kishinev 2028, Moldova
| | - Serghei Ostrovsky
- Institute of Applied Physics, Academy of Sciences of Moldova, Kishinev 2028, Moldova
| | - Katharina Ollefs
- ESRF - The European Synchrotron, CS 40220, 38043 Grenoble Cedex 9, France
| | - 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
| | - Rodolphe Clérac
- CNRS, ICMCB, UPR 9048, Pessac 33600, France.,Univ. Bordeaux, CRPP, UPR 8641, Pessac 33600, France
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20
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Kroll T, Solomon EI, de Groot FMF. Final-State Projection Method in Charge-Transfer Multiplet Calculations: An Analysis of Ti L-Edge Absorption Spectra. J Phys Chem B 2015; 119:13852-8. [PMID: 26226507 DOI: 10.1021/acs.jpcb.5b04133] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A projection method to determine the final-state configuration character of all peaks in a charge transfer multiplet calculation of a 2p X-ray absorption spectrum is presented using a d(0) system as an example. The projection method is used to identify the most important influences on spectral shape and to map out the configuration weights. The spectral shape of a 2p X-ray absorption or L2,3-edge spectrum is largely determined by the ratio of the 2p core-hole interactions relative to the 2p3d atomic multiplet interaction. This leads to a nontrivial spectral assignment, which makes a detailed theoretical description of experimental spectra valuable for the analysis of bonding.
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Affiliation(s)
- Thomas Kroll
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| | - Edward I Solomon
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| | - Frank M F de Groot
- Department of Inorganic Chemistry and Catalysis, Utrecht University , Universiteitsweg 99, 3584 CG Utrecht, Netherlands
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21
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van der Laan G, Figueroa AI. X-ray magnetic circular dichroism—A versatile tool to study magnetism. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.03.018] [Citation(s) in RCA: 153] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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22
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Subkhangulov RR, Henriques AB, Rappl PHO, Abramof E, Rasing T, Kimel AV. All-optical manipulation and probing of the d-f exchange interaction in EuTe. Sci Rep 2014; 4:4368. [PMID: 24658449 PMCID: PMC3963036 DOI: 10.1038/srep04368] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 02/24/2014] [Indexed: 11/19/2022] Open
Abstract
We demonstrate that the ultrafast fast dynamics of the d–f exchange interaction, between conduction band electrons and lattice spins in EuTe, can be accessed using an all-optical technique. Our results reveal, in full detail, the time evolution of the d–f exchange interaction induced by a femtosecond laser pulse. Specifically, by monitoring the time resolved dynamics of the reflectivity changes and Kerr rotation of a weak light pulse reflected from the surface of the sample, it is shown that an intense femtosecond light pulse with photon energies higher than that of the bandgap, triggers spin waves in EuTe. The laser-induced spin waves modulate the d–f exchange interaction, and cause the bandgap to oscillate with an amplitude reaching 1 meV, at frequencies up to tens of GHz. The ability to control and monitor the dynamics of the exchange energy with our all-optical technique opens up new opportunities for the manipulation of magnetism at ultrafast time-scales.
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Affiliation(s)
- R R Subkhangulov
- Radboud University Nijmegen, Institute for Molecules and Materials, 6525 AJ, Nijmegen, The Netherlands
| | - A B Henriques
- Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 66318, CEP 05315-970 Sao Paulo, Brazil
| | - P H O Rappl
- LAS-INPE, 12227-010 Sao Jose dos Campos, Brazil
| | - E Abramof
- LAS-INPE, 12227-010 Sao Jose dos Campos, Brazil
| | - Th Rasing
- Radboud University Nijmegen, Institute for Molecules and Materials, 6525 AJ, Nijmegen, The Netherlands
| | - A V Kimel
- Radboud University Nijmegen, Institute for Molecules and Materials, 6525 AJ, Nijmegen, The Netherlands
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23
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24
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van der Laan G. Recent Advances in Circular and Linear X-ray Magnetic Dichroism: Experiment and Theory. ACTA ACUST UNITED AC 2013. [DOI: 10.1080/08940886.2013.850372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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25
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26
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27
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Haskel D, Fabbris G, Zhernenkov M, Kong PP, Jin CQ, Cao G, van Veenendaal M. Pressure tuning of the spin-orbit coupled ground state in Sr2IrO4. PHYSICAL REVIEW LETTERS 2012; 109:027204. [PMID: 23030204 DOI: 10.1103/physrevlett.109.027204] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Indexed: 06/01/2023]
Abstract
X-ray absorption spectroscopy studies of the magnetic-insulating ground state of Sr2IrO4 at ambient pressure show a clear deviation from a strong spin-orbit (SO) limit J(eff)=1/2 state, a result of local exchange interactions and a nonzero tetragonal crystal field mixing SO split J(eff)=1/2, 3/2 states. X-ray magnetic circular dichroism measurements in a diamond anvil cell show a magnetic transition at a pressure of ∼17 GPa, where the "weak" ferromagnetic moment is quenched despite transport measurements showing insulating behavior to at least 40 GPa. The magnetic transition has implications for the origin of the insulating gap and the nature of exchange interactions in this SO coupled system. The expectation value of the angular part of the SO interaction, <L·S>, extrapolates to zero at ∼80-90 GPa where an increased bandwidth strongly mixes J(eff)=1/2, 3/2 states and SO interactions no longer dominate the electronic ground state of Sr2IrO4.
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Affiliation(s)
- D Haskel
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA.
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28
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van der Laan G. Spin-orbit sum rule for electric multipole transitions in nonresonant inelastic x-ray scattering. PHYSICAL REVIEW LETTERS 2012; 108:077401. [PMID: 22401253 DOI: 10.1103/physrevlett.108.077401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2011] [Indexed: 05/31/2023]
Abstract
The sum rule for the branching ratio of dipole-excited core-valence transitions in isotropic x-ray absorption spectroscopy is extended to electric multipole transitions. The derived sum rule not only shows that the branching ratio is linearly related to the expectation value of the angular part of the spin-orbit operator in the valence states, but also shows a strong dependence on the rank of the multipole. The spin-orbit dependence vanishes in the weighted sum over the branching ratios. The effect can be an important diagnostic tool for high-energy spectroscopies.
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29
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Cho DY, Park J, Yu J, Park JG. X-ray absorption spectroscopy studies of spin-orbit coupling in 5d transition metal oxides. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2012; 24:055503. [PMID: 22227572 DOI: 10.1088/0953-8984/24/5/055503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In order to examine the effects of strong valence band spin-orbit coupling (SOC) in 5d transition metal oxides (TMOs), we have investigated the L(2) and L(3) edge white-line intensities of the x-ray absorption spectra of several 5d TMOs. The white-line intensities at both edges are found to decrease monotonously with increasing 5d electron occupancy, while their ratio showed anomalous behavior for late 5d TMOs (IrO(2), PtO(2), and Au(2)O(3)), deviating significantly from the theoretical value of 2 expected for the case of weak SOC. This observation serves as a clear experimental indication of strong SOC effects in 5d TMOs. We also discussed how the 5d TMOs can have charge transfer effects different from their counterpart 5d elemental metals by making comparative studies. Our works demonstrate the importance of j quantum states due to strong SOC in the 5d system.
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Affiliation(s)
- Deok-Yong Cho
- CSCMR and FPRD, Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Republic of Korea.
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Laguna-Marco MA, Haskel D, Souza-Neto N, Lang JC, Krishnamurthy VV, Chikara S, Cao G, van Veenendaal M. Orbital magnetism and spin-orbit effects in the electronic structure of BaIrO3. PHYSICAL REVIEW LETTERS 2010; 105:216407. [PMID: 21231332 DOI: 10.1103/physrevlett.105.216407] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Indexed: 05/30/2023]
Abstract
The electronic structure and magnetism of Ir 5d5 states in nonmetallic, weakly ferromagnetic BaIrO3 are probed with x-ray absorption techniques. Contrary to expectation, the Ir 5d orbital moment is found to be ~1.5 times larger than the spin moment. This unusual, atomiclike nature of the 5d moment is driven by a strong spin-orbit interaction in heavy Ir ions, as confirmed by the nonstatistical large branching ratio at Ir L(2,3) absorption edges. As a consequence, orbital interactions cannot be neglected when addressing the nature of magnetic ordering in BaIrO3. The local moment behavior persists even as the metallic-paramagnetic phase boundary is approached with Sr doping or applied pressure.
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Affiliation(s)
- M A Laguna-Marco
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA.
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Kroll T, Aristov VY, Molodtsova OV, Ossipyan YA, Vyalikh DV, Büchner B, Knupfer M. Spin and Orbital Ground State of Co in Cobalt Phthalocyanine. J Phys Chem A 2009; 113:8917-22. [DOI: 10.1021/jp903001v] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- T. Kroll
- IFW Dresden, P.O. Box 270016, D-01171 Dresden, Germany, Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow distr. 142432, Russia, and Institute of Solid State Physics, TU Dresden, D-01069 Dresden, Germany
| | - V. Yu. Aristov
- IFW Dresden, P.O. Box 270016, D-01171 Dresden, Germany, Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow distr. 142432, Russia, and Institute of Solid State Physics, TU Dresden, D-01069 Dresden, Germany
| | - O. V. Molodtsova
- IFW Dresden, P.O. Box 270016, D-01171 Dresden, Germany, Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow distr. 142432, Russia, and Institute of Solid State Physics, TU Dresden, D-01069 Dresden, Germany
| | - Yu. A. Ossipyan
- IFW Dresden, P.O. Box 270016, D-01171 Dresden, Germany, Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow distr. 142432, Russia, and Institute of Solid State Physics, TU Dresden, D-01069 Dresden, Germany
| | - D. V. Vyalikh
- IFW Dresden, P.O. Box 270016, D-01171 Dresden, Germany, Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow distr. 142432, Russia, and Institute of Solid State Physics, TU Dresden, D-01069 Dresden, Germany
| | - B. Büchner
- IFW Dresden, P.O. Box 270016, D-01171 Dresden, Germany, Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow distr. 142432, Russia, and Institute of Solid State Physics, TU Dresden, D-01069 Dresden, Germany
| | - M. Knupfer
- IFW Dresden, P.O. Box 270016, D-01171 Dresden, Germany, Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow distr. 142432, Russia, and Institute of Solid State Physics, TU Dresden, D-01069 Dresden, Germany
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Hellmann I, Täschner C, Klingeler R, Leonhardt A, Büchner B, Knupfer M. Structure and electronic properties of Li-doped vanadium oxide nanotubes. J Chem Phys 2008; 128:224701. [DOI: 10.1063/1.2931542] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bagus PS, Freund H, Kuhlenbeck H, Ilton ES. A new analysis of X-ray adsorption branching ratios: Use of Russell–Saunders coupling. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2008.02.085] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Moore KT, van der Laan G, Tobin JG, Chung BW, Wall MA, Schwartz AJ. Probing the population of the spin-orbit split levels in the actinide 5f states. Ultramicroscopy 2005; 106:261-8. [PMID: 16309839 DOI: 10.1016/j.ultramic.2005.08.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2005] [Revised: 08/10/2005] [Accepted: 08/30/2005] [Indexed: 10/25/2022]
Abstract
Spin-orbit interaction in the 5f states is believed to strongly influence exotic behaviors observed in actinide metals and compounds. Understanding these interactions and how they relate to the actinide series is of considerable importance. To address this issue, the branching ratio of the white-line peaks of the N4,5 edge for the light actinide metals, alpha-Th, alpha-U, and alpha-Pu were recorded using electron energy-loss spectroscopy (EELS) in a transmission electron microscope (TEM) and synchrotron-radiation-based X-ray absorption spectroscopy (XAS). Using the spin-orbit sum rule and the branching ratios from both experimental spectra and many-electron atomic spectral calculations, accurate values of the spin-orbit interaction, and thus the relative occupation of the j = 5/2 and 7/2 levels, are determined for the actinide 5f states. Results show that the spin-orbit sum rule works very well with both EELS and XAS spectra, needing little or no correction. This is important, since the high spatial resolution of a TEM can be used to overcome the problems of single-crystal growth often encountered with actinide metals, allowing acquisition of EELS spectra, and subsequent spin-orbit analysis, from nm-sized regions. The relative occupation numbers obtained by our method have been compared with recent theoretical results and they show a good agreement in their trend.
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Affiliation(s)
- K T Moore
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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van der Laan G, Moore KT, Tobin JG, Chung BW, Wall MA, Schwartz AJ. Applicability of the spin-orbit sum rule for the actinide 5f states. PHYSICAL REVIEW LETTERS 2004; 93:097401. [PMID: 15447136 DOI: 10.1103/physrevlett.93.097401] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2004] [Indexed: 05/24/2023]
Abstract
The branching ratio of core-valence transitions in electron energy-loss spectroscopy and x-ray absorption spectroscopy is linearly related to the expectation value of the spin-orbit operator of the valence states. Here, we analyze the branching ratio of the N(4,5) edges in the actinides and find that the spin-orbit sum rule gives an accurate result without the need to include the core-valence interactions. The branching ratio is not only useful to study the variations in the 5f spin-orbit interaction, it also allows us to constrain the 5f count for given angular-momentum coupling conditions.
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Affiliation(s)
- G van der Laan
- Magnetic Spectroscopy, Daresbury Laboratory, Warrington WA4 4AD, United Kingdom
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Dhesi SS, van Der Laan G, Dudzik E, Shick AB. Anisotropic spin-orbit coupling and magnetocrystalline anisotropy in vicinal co films. PHYSICAL REVIEW LETTERS 2001; 87:067201. [PMID: 11497850 DOI: 10.1103/physrevlett.87.067201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2000] [Indexed: 05/23/2023]
Abstract
The anisotropy of the spin-orbit interaction, <lambda(a)>, in vicinal Co films has been measured using x-ray magnetic linear dichroism (XMLD). A linear increase in <lambda(a)> with Co step density is found using a new sum rule and represents the first experimental confirmation that XMLD probes the magnetocrystalline anisotropy energy (MAE). X-ray magnetic circular dichroism is used to confirm that the XMLD arises from changes in the local step-edge electronic structure. The XMLD sum rule gives a larger MAE compared to macroscopic values and is discussed with respect to other local probes of the MAE.
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Affiliation(s)
- S S Dhesi
- European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble, France
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Thole BT. X-ray-absorption sum rules in jj-coupled operators and ground-state moments of actinide ions. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:14458-14469. [PMID: 9983244 DOI: 10.1103/physrevb.53.14458] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Thole BT. Spin polarization and magnetic dichroism in photoemission from core and valence states in localized magnetic systems. IV. Core-hole polarization in resonant photoemission. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:15355-15363. [PMID: 9980892 DOI: 10.1103/physrevb.52.15355] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Chen JM, Klauser R, Yang SC, Wen CR. Characterization of the electronic structure of SiCl4 probed by X-ray absorption and ion desorption techniques. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(95)01114-o] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Pearson DH, Ahn CC, Fultz B. Measurements of 3d occupancy from Cu L2,3 electron-energy-loss spectra of rapidly quenched CuZr, CuTi, CuPd, CuPt, and CuAu. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:12969-12972. [PMID: 9975467 DOI: 10.1103/physrevb.50.12969] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Thole BT, Fabrizio M. Magnetic ground-state properties and spectral distributions. I. X-ray-absorption spectra. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:11466-11473. [PMID: 9975276 DOI: 10.1103/physrevb.50.11466] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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de Groot FMF, Hu ZW, Lopez MF, Kaindl G, Guillot F, Tronc M. Differences between L3 and L2 x‐ray absorption spectra of transition metal compounds. J Chem Phys 1994. [DOI: 10.1063/1.468351] [Citation(s) in RCA: 120] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Chen JM, Simons JK, Tan KH, Rosenberg RA. Correlation between interatomic distances and the x-ray-absorption near-edge structure of single-crystal sapphire. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:10047-10051. [PMID: 10007277 DOI: 10.1103/physrevb.48.10047] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Thole BT. Spin polarization and magnetic dichroism in photoemission from core and valence states in localized magnetic systems. II. Emission from open shells. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:210-223. [PMID: 10006767 DOI: 10.1103/physrevb.48.210] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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O'Brien WL, Jia J, Dong QY, Callcott TA, Rubensson JE, Mueller DL, Ederer DL. Intermediate coupling in L2-L3 core excitons of MgO, Al2O3, and SiO2. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:1013-1018. [PMID: 9999606 DOI: 10.1103/physrevb.44.1013] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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47
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Dowben PA, LaGraffe D, Li D, Vidali G, Zhang L, Dottl L, Onellion M. Probing the metal-nonmetal transition in thin metal overlayers using resonant photoemission. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:10677-10689. [PMID: 9996798 DOI: 10.1103/physrevb.43.10677] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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48
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Dowben PA, LaGraffe D, Li D, Miller A, Zhang L, Dottl L, Onellion M. Substrate-induced magnetic ordering of rare-earth overlayers. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:3171-3179. [PMID: 9997622 DOI: 10.1103/physrevb.43.3171] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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50
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Hitchcock A, Wen A, Rühl E. Transition metal 2p excitaton of organometallic compounds studied by electron energy loss spectroscopy. Chem Phys 1990. [DOI: 10.1016/0301-0104(90)85020-w] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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