2024-03-29T01:38:39Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/521852022-11-17T02:08:08Zhdl_2115_20039hdl_2115_116Charge disproportionation with lattice distortion of α-(BEDT-TTF)2RbHg(SCN)4 observed by 13C-NMRNoda, KazukiIhara, YoshihikoKawamoto, Atsushi428To 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.American Physical SocietyJournal Articleapplication/pdfhttp://hdl.handle.net/2115/52185https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/52185/1/PRB87-8_085105.pdf1098-0121Physical Review B8780851052013-02-15enginfo:doi/10.1103/PhysRevB.87.085105©2013 American Physical Societypublisher