κ-(BEDT-TTF)2Cu2(CN)3 spin liquid : beyond the average structure

We present here the first accurate determination of the exact structure of κ-(BEDT-TTF)2Cu2(CN)3. Not only did we show that the room temperature structure used over the last twenty years was incorrect, but we were also able to correctly and precisely determine it. The results of our work provide evi...

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Detalles Bibliográficos
Autores: Foury-Leylekian, Pascale, Ilakovac, Vita, Balédent, Victor, Fertey, Pierre, Arakcheeva, Alla, Milat, Ognjen, Petermann, Denis, Guillier, Gilles, Miyagawa, Kazuya, Kanoda, Kazushi, Alemany i Cahner, Pere, Canadell, Enric, 1950-, Tomic, Silvia, Pouget, Jean-Paul
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/184335
Acceso en línea:https://hdl.handle.net/2445/184335
Access Level:acceso abierto
Palabra clave:Difracció de raigs X
Líquids
Centrifugació
X-rays diffraction
Liquids
Centrifugation
Descripción
Sumario:We present here the first accurate determination of the exact structure of κ-(BEDT-TTF)2Cu2(CN)3. Not only did we show that the room temperature structure used over the last twenty years was incorrect, but we were also able to correctly and precisely determine it. The results of our work provide evidence that the structure presents a triclinic symmetry with two non-equivalent dimers in the unit cell, which implies a charge disproportionation between the dimers. However, structural refinement shows that the charge disproportionation is quite weak at room temperature.

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