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arXiv · 0708.1696

Charge Ordering in alpha-(BEDT-TTF)2I3 by synchrotron x-ray diffraction

Toru Kakiuchi·Yusuke Wakabayashi·Hiroshi Sawa·Toshihiro Takahashi·Toshikazu Nakamura
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Abstract

The spatial charge arrangement of a typical quasi-two-dimensional organic conductor alpha-(BEDT-TTF)2I3 is revealed by single crystal structure analysis using synchrotron radiation. The results show that the horizontal stripe type structure, which was suggested by mean field theory, is established. We also find the charge disproportion above the metal-insulator transition temperature and a significant change in transfer integrals caused by the phase transition. Our result elucidates the insulating phase of this material as a 2k_F charge density localization.

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Toru Kakiuchi, Yusuke Wakabayashi, Hiroshi Sawa, Toshihiro Takahashi, Toshikazu Nakamura. 2007-08-13. Charge Ordering in alpha-(BEDT-TTF)2I3 by synchrotron x-ray diffraction. https://doi.org/10.1143/jpsj.76.113702

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