Temperature and electric-current dependence of charge-ordered domains in θ-(BEDT-TTF)2CsZn(SCN)4

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Published 25 September 2008 • Europhysics Letters Association
, , Citation T. Ito et al 2008 EPL 84 26002 DOI 10.1209/0295-5075/84/26002

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Author affiliations

1 The Graduate School of Natural Science and Technology, Okayama University - Okayama 700-8530, Japan

2 Institute of Multidisciplinary Research for Advanced Materials, Tohoku University - Sendai 980-8577, Japan

3 The Institute for Solid State Physics, The University of Tokyo - Kashiwa 277-8581, Japan

4 Department of Organic and Polymeric Materials, Tokyo Institute of Technology - Tokyo 152-8552, Japan

5 Department of Applied Physics, Waseda University - Tokyo 169-8555, Japan

Dates

  1. Received 19 May 2008
  2. Accepted 1 September 2008
  3. Published
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0295-5075/84/2/26002

Abstract

We report X-ray diffraction measurements of the charge-ordered organic conductor θ-(BEDT-TTF)2CsZn(SCN)4 at various temperatures with external currents. The two kinds of diffuse scattering observed at q1=(2/3 k 1/3) and q2=(0 k 1/2) exhibit remarkable difference in the interplane correlation along the b-axis, the temperature dependence, and the electric-current dependence. These observations suggest that the two diffuse scatterings come from spatially different charge-ordered domains. The external current melts the q2-type domains, which can control the competition of the two orders.

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