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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Detalhes 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
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/184335
Acesso em linha:https://hdl.handle.net/2445/184335
Access Level:acceso abierto
Palavra-chave:Difracció de raigs X
Líquids
Centrifugació
X-rays diffraction
Liquids
Centrifugation
Descrição
Resumo: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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