Chiba Ryo, Hiraki K, Takahashi T, Yamamoto H M, Nakamura T
Department of Physics, Gakushuin University, Mejiro, Tokyo 171-8588, Japan.
Phys Rev Lett. 2004 Nov 19;93(21):216405. doi: 10.1103/PhysRevLett.93.216405. Epub 2004 Nov 17.
Large charge disproportionation has been confirmed in the metallic state of a 1/4-filled organic conductor theta-(BEDT-TTF)2RbZn(SCN)4 by means of 13C-NMR analysis on a selectively 13C-enriched single crystal sample. By comparing the homogeneous and inhomogeneous linewidths, the temperature dependence of the extremely slow dynamics of charge fluctuations has been determined first. The exotic nature of the metallic state of this salt is discussed.
通过对选择性富集(^{13}C)的单晶样品进行(^{13}C)-核磁共振分析，已证实(1/4)填充的有机导体(\theta)-(BEDT-TTF)_2RbZn(SCN)_4)的金属态存在大电荷 disproportionation。通过比较均匀线宽和非均匀线宽，首次确定了电荷涨落极慢动力学的温度依赖性。讨论了该盐金属态的奇异性质。
