(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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doaj-60b512dbcb4544afa4e634c2df0b31722020-11-24T20:58:12ZengMDPI AGCrystals2073-43522018-04-018415810.3390/cryst8040158cryst8040158(BEDT-TTF)2Cu2(CN)3 Spin Liquid: Beyond the Average StructurePascale Foury-Leylekian0Vita Ilakovac1Victor Balédent2Pierre Fertey3Alla Arakcheeva4Ognjen Milat5Denis Petermann6Gilles Guillier7Kazuya Miyagawa8Kazushi Kanoda9Pere Alemany10Enric Canadell11Silvia Tomic12Jean-Paul Pouget13Laboratory of Solid State Physics, CNRS UMR 8502, Univ. Paris Sud, Paris Saclay University, 91405 Orsay CEDEX, FranceUPMC, LCP-MR, Sorbonne University, CNRS UMR 7614, F-75252 Paris, FranceLaboratory of Solid State Physics, CNRS UMR 8502, Univ. Paris Sud, Paris Saclay University, 91405 Orsay CEDEX, FranceSynchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, B.P. 48, F-91192 Gif-sur-Yvette, FranceLaboratory of Condensed Matter, EPFL, CH-1015 Lausanne, SwitzerlandInstitute of Physics, Bijenička Cesta 46, HR-10000 Zagreb, CroatiaLaboratory of Solid State Physics, CNRS UMR 8502, Univ. Paris Sud, Paris Saclay University, 91405 Orsay CEDEX, FranceLaboratory of Solid State Physics, CNRS UMR 8502, Univ. Paris Sud, Paris Saclay University, 91405 Orsay CEDEX, FranceDepartment of Applied Physics, University of Tokyo, Tokyo 113-8656, JapanDepartment of Applied Physics, University of Tokyo, Tokyo 113-8656, JapanDepartment of Materials Science and Chemical Physics and Institute of Theoretical and Computational Chemistry (IQTCUB), University of Barcelona, Martí i Franquès 1, 08028 Barcelona, SpainInstitute of Materials Science of Barcelona (ICMAB-CSIC), Campus de la UAB, 08193 Bellaterra, SpainInstitute of Physics, Bijenička Cesta 46, HR-10000 Zagreb, CroatiaLaboratory of Solid State Physics, CNRS UMR 8502, Univ. Paris Sud, Paris Saclay University, 91405 Orsay CEDEX, FranceWe 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.http://www.mdpi.com/2073-4352/8/4/158mott transitionmolecular spin liquidsgeometrical frustrationX-ray diffraction |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Pascale Foury-Leylekian Vita Ilakovac Victor Balédent Pierre Fertey Alla Arakcheeva Ognjen Milat Denis Petermann Gilles Guillier Kazuya Miyagawa Kazushi Kanoda Pere Alemany Enric Canadell Silvia Tomic Jean-Paul Pouget |
spellingShingle |
Pascale Foury-Leylekian Vita Ilakovac Victor Balédent Pierre Fertey Alla Arakcheeva Ognjen Milat Denis Petermann Gilles Guillier Kazuya Miyagawa Kazushi Kanoda Pere Alemany Enric Canadell Silvia Tomic Jean-Paul Pouget (BEDT-TTF)2Cu2(CN)3 Spin Liquid: Beyond the Average Structure Crystals mott transition molecular spin liquids geometrical frustration X-ray diffraction |
author_facet |
Pascale Foury-Leylekian Vita Ilakovac Victor Balédent Pierre Fertey Alla Arakcheeva Ognjen Milat Denis Petermann Gilles Guillier Kazuya Miyagawa Kazushi Kanoda Pere Alemany Enric Canadell Silvia Tomic Jean-Paul Pouget |
author_sort |
Pascale Foury-Leylekian |
title |
(BEDT-TTF)2Cu2(CN)3 Spin Liquid: Beyond the Average Structure |
title_short |
(BEDT-TTF)2Cu2(CN)3 Spin Liquid: Beyond the Average Structure |
title_full |
(BEDT-TTF)2Cu2(CN)3 Spin Liquid: Beyond the Average Structure |
title_fullStr |
(BEDT-TTF)2Cu2(CN)3 Spin Liquid: Beyond the Average Structure |
title_full_unstemmed |
(BEDT-TTF)2Cu2(CN)3 Spin Liquid: Beyond the Average Structure |
title_sort |
(bedt-ttf)2cu2(cn)3 spin liquid: beyond the average structure |
publisher |
MDPI AG |
series |
Crystals |
issn |
2073-4352 |
publishDate |
2018-04-01 |
description |
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. |
topic |
mott transition molecular spin liquids geometrical frustration X-ray diffraction |
url |
http://www.mdpi.com/2073-4352/8/4/158 |
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