New insights into the structural properties of κ-(BEDT-TTF)2Ag2(CN)3 spin liquid
| Autor: | V. Balédent, Pierre Fertey, Pascale Foury-Leylekian, Gunzi Saito, Enric Canadell, Kazuya Miyagawa, Takaaki Hiramatsu, Kazushi Kanoda, Jean-Paul Pouget, Vita Ilakovac, Silvia Tomić, Yukihiro Yoshida, Pere Alemany, Ognjen Milat |
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| Přispěvatelé: | Laboratoire de Physique des Solides (LPS), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Japan Society for the Promotion of Science |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Mott transition
Geometrical frustration 02 engineering and technology Triclinic crystal system 01 natural sciences Transition metal Phase (matter) 0103 physical sciences Materials Chemistry molecular spin liquids geometrical frustration X-ray diffraction Symmetry breaking 010306 general physics ComputingMilieux_MISCELLANEOUS Spin-½ [PHYS]Physics [physics] Chemistry Metals and Alloys 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics 3. Good health Electronic Optical and Magnetic Materials Molecular spin liquids Chemical physics Condensed Matter::Strongly Correlated Electrons Quantum spin liquid 0210 nano-technology Monoclinic crystal system |
| Zdroj: | Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials, International Union of Crystallography, 2020, 76 (4), pp.581-590. ⟨10.1107/S2052520620005545⟩ Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 2018-0969 2052-5206 |
| DOI: | 10.1107/S2052520620005545⟩ |
| Popis: | Here, the first accurate study is presented of the room-temperature and 100 K structures of one of the first organic spin liquids, -(BEDT-TTF)2Ag2(CN)3. It is shown that the monoclinic structure determined previously is only the average one. It is shown that the exact structure presents triclinic symmetry with two non-equivalent dimers in the unit cell. But surprisingly this does not lead to a sizeable charge disproportionation between dimers. The difference from the analogue compound -(BEDT-TTF)2Cu2(CN)3 which also presents a spin liquid phase is discussed in detail. The data provided here show the importance of the anionic layer and in particular the transition metal position in the process of symmetry breaking. The possible impact of the symmetry breaking, albeit weak, on the spin-liquid mechanism and the influence of various disorders on the physical properties of this system is also discussed. Work in Spain was supported by MICIU (PGC2018-096955-BC44 and PGC2018-093863-B-C22), MINECO through the Severo Ochoa (SEV-2015-0496) and Maria deMaeztu (MDM- 2017-0767) Programs and Generalitat de Catalunya (2017SGR1506 and 2017SGR1289). Work in Japan is supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (JP23225005 and JP18H05225). |
| Databáze: | OpenAIRE |
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