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Charge disproportionation with lattice distortion of α-(BEDT-TTF)2RbHg(SCN)4 observed by 13C-NMR

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Title: Charge disproportionation with lattice distortion of α-(BEDT-TTF)2RbHg(SCN)4 observed by 13C-NMR
Authors: Noda, Kazuki Browse this author
Ihara, Yoshihiko Browse this author
Kawamoto, Atsushi Browse this author →KAKEN DB
Issue Date: 15-Feb-2013
Publisher: American Physical Society
Journal Title: Physical Review B
Volume: 87
Issue: 8
Start Page: 085105
Publisher DOI: 10.1103/PhysRevB.87.085105
Abstract: To explore the connection between α-(BEDT-TTF)2I3 and α-(BEDT-TTF)2MHg(SCN)4 (M = K, Rb, Tl and NH4) and to resolve the difference between band picture and charge fluctuation of α-(BEDT-TTF)2MHg(SCN)4, we utilized 13C-NMR to examine α-(BEDT-TTF)2RbHg(SCN)4 under the conditions with a large hyperfine coupling constant at each site. The temperature dependence of site susceptibility showed the development of spin disproportionation as observed in α-(BEDT-TTF)2I3. We found that the linewidth of the A site only increased as temperature decreased from 200 to 100 K, a change associated with the development of lattice modulation. These findings indicate that density-wave modulation occurs during charge disproportionation instability.
Rights: ©2013 American Physical Society
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 河本 充司

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