Dynamics of Charge Ordering in the Nonlinear Regime of θ-(BEDT-TTF)2CsZn(SCN)4

被引：3
|
作者：
Abdel-Jawad, Majed [1 ]
Terasaki, Ichiro [2 ]
Mori, Takehiko [3 ]
Mori, Hatsumi [4 ]
机构：
[1] RIKEN, Wako, Saitama 3510198, Japan
[2] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan
[3] Tokyo Inst Technol, Dept Organ & Polymer Mat, Meguro Ku, Tokyo 1528552, Japan
[4] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2015年 / 84卷 / 03期
关键词：
DENSITY WAVES; ORGANIC CONDUCTORS; TEMPERATURE; STATE;
D O I：
10.7566/JPSJ.84.033707
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present thermoelectric power measurements in the nonlinear-resistivity regime of theta-(BEDT-TTF)(2)CsZn(SCN)(4) [BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene]. The AC Seebeck coefficient is found to change its sign from positive to negative with increasing DC current, which coincides with a drop in resistivity, implying that the nonlinear regime in theta-(BEDT-TTF)(2)CsZn(SCN)(4) is not due to self-heating. Three different mechanisms are put forward to explain the origin of the sign change of the thermoelectric power with increasing electric current.
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页数：4
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