Nonlinear conduction by melting of stripe-type charge order in organic conductors with triangular lattices

Yasuhiro Tanaka*, Kenji Yonemitsu

*この研究の対応する著者

研究成果: Article査読

2 被引用数 (Scopus)

抄録

We theoretically discuss the mechanism for the peculiar nonlinear conduction in quasi-two-dimensional organic conductors θ-(BEDT-TTF) 2X [BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene] through the melting of stripe-type charge order. An extended Peierls-Hubbard model attached to metallic electrodes is investigated by a nonequilibrium Green's function technique. A novel current-voltage characteristic appears in a coexistent state of stripe-type and nonstripe 3-fold charge orders, where the applied bias melts mainly the stripe-type charge order through the reduction of lattice distortion, whereas the 3-fold charge order survives. These contrastive responses of the two different charge orders are consistent with the experimental observations.

本文言語English
論文番号103702
ジャーナルjournal of the physical society of japan
80
10
DOI
出版ステータスPublished - 2011 10月
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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