Kosterlitz-Thouless-type transition in a charge ordered state of the layered organic conductor α-(BEDT-TTF)2I3

S. Uji; K. Kodama; K. Sugii; Y. Takahide; T. Terashima; N. Kurita; S. Tsuchiya; M. Kohno; M. Kimata; K. Yamamoto; K. Yakushi

doi:10.1103/PhysRevLett.110.196602

Kosterlitz-Thouless-type transition in a charge ordered state of the layered organic conductor α-(BEDT-TTF)₂I₃

S. Uji, K. Kodama, K. Sugii, Y. Takahide, T. Terashima, N. Kurita, S. Tsuchiya, M. Kohno, M. Kimata, K. Yamamoto, K. Yakushi

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The current-voltage characteristics in the charge order state of the two-dimensional organic conductor α-(BEDT-TTF)₂I₃ exhibit power law behavior at low temperatures. The power law is understood in terms of the electric-field-dependent potential between electrons and holes, which are thermally excited from the charge order state. The power law exponent steeply changes from 1 to 3 in the range from 30 to 45 K with decreasing temperature, thereby suggesting the occurrence of a Kosterlitz-Thouless-type transition; many (few) unbound electron-hole pairs are thermally excited above (below) the transition. The effects of the finite size and interlayer coupling on the power law behavior are discussed.

Original language	English
Article number	196602
Journal	Physical review letters
Volume	110
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.110.196602
Publication status	Published - 2013 May 8
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.110.196602

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Kosterlitz-Thouless-type transition in a charge ordered state of the layered organic conductor α-(BEDT-TTF)₂I₃. / Uji, S.; Kodama, K.; Sugii, K.; Takahide, Y.; Terashima, T.; Kurita, N.; Tsuchiya, S.; Kohno, M.; Kimata, M.; Yamamoto, K.; Yakushi, K.

In: Physical review letters, Vol. 110, No. 19, 196602, 08.05.2013.

Research output: Contribution to journal › Article › peer-review

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abstract = "The current-voltage characteristics in the charge order state of the two-dimensional organic conductor α-(BEDT-TTF)2I3 exhibit power law behavior at low temperatures. The power law is understood in terms of the electric-field-dependent potential between electrons and holes, which are thermally excited from the charge order state. The power law exponent steeply changes from 1 to 3 in the range from 30 to 45 K with decreasing temperature, thereby suggesting the occurrence of a Kosterlitz-Thouless-type transition; many (few) unbound electron-hole pairs are thermally excited above (below) the transition. The effects of the finite size and interlayer coupling on the power law behavior are discussed.",

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AU - Takahide, Y.

AU - Terashima, T.

AU - Kurita, N.

AU - Tsuchiya, S.

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AU - Kimata, M.

AU - Yamamoto, K.

AU - Yakushi, K.

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Kosterlitz-Thouless-type transition in a charge ordered state of the layered organic conductor α-(BEDT-TTF)₂I₃

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