Roles of spin fluctuation and frustration in the superconductivity of β-(BDA-TTP)2X (X=SbF6, AsF6) under uniaxial compression

Hiroshi Ito; Tetsuo Ishihara; Hisaaki Tanaka; Shin Ichi Kuroda; Takeo Suzuki; Seiichiro Onari; Yukio Tanaka; Jun Ichi Yamada; Koichi Kikuchi

doi:10.1103/PhysRevB.78.172506

Roles of spin fluctuation and frustration in the superconductivity of β-(BDA-TTP)₂X (X=SbF₆, AsF₆) under uniaxial compression

Hiroshi Ito, Tetsuo Ishihara, Hisaaki Tanaka, Shin Ichi Kuroda, Takeo Suzuki, Seiichiro Onari, Yukio Tanaka, Jun Ichi Yamada, Koichi Kikuchi

Graduate School of Natural Science and Technology

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

9 Citations (Scopus)

Abstract

β -type BDA-TTP [BDA-TTP=2,5 -bis(1,3-dithian-2-ylidene)-1,3,4,6- tetrathiapentalene] salts possess high transition temperatures TC reaching 7 K among organic superconductors. TC of β- (BDA-TTP) 2 X (X= SbF6, AsF6) is studied by resistive measurements under uniaxial compression. TC once increases and takes a maximum under compression parallel to the donor stack while it decreases under compression perpendicular to the donor stack. These results are in agreement with the half-filled Hubbard model on the triangular lattice in which the compression controls the spin fluctuation and frustration in the weak pressure region.

Original language	English
Article number	172506
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.78.172506
Publication status	Published - Nov 14 2008

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Ito, H., Ishihara, T., Tanaka, H., Kuroda, S. I., Suzuki, T., Onari, S., Tanaka, Y., Yamada, J. I., & Kikuchi, K. (2008). Roles of spin fluctuation and frustration in the superconductivity of β-(BDA-TTP)₂X (X=SbF₆, AsF₆) under uniaxial compression. Physical Review B - Condensed Matter and Materials Physics, 78(17), [172506]. https://doi.org/10.1103/PhysRevB.78.172506

Roles of spin fluctuation and frustration in the superconductivity of β-(BDA-TTP)₂X (X=SbF₆, AsF₆) under uniaxial compression. / Ito, Hiroshi; Ishihara, Tetsuo; Tanaka, Hisaaki; Kuroda, Shin Ichi; Suzuki, Takeo; Onari, Seiichiro; Tanaka, Yukio; Yamada, Jun Ichi; Kikuchi, Koichi.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 78, No. 17, 172506, 14.11.2008.

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

Ito, Hiroshi ; Ishihara, Tetsuo ; Tanaka, Hisaaki ; Kuroda, Shin Ichi ; Suzuki, Takeo ; Onari, Seiichiro ; Tanaka, Yukio ; Yamada, Jun Ichi ; Kikuchi, Koichi. / Roles of spin fluctuation and frustration in the superconductivity of β-(BDA-TTP)₂X (X=SbF₆, AsF₆) under uniaxial compression. In: Physical Review B - Condensed Matter and Materials Physics. 2008 ; Vol. 78, No. 17.

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abstract = "β -type BDA-TTP [BDA-TTP=2,5 -bis(1,3-dithian-2-ylidene)-1,3,4,6- tetrathiapentalene] salts possess high transition temperatures TC reaching 7 K among organic superconductors. TC of β- (BDA-TTP) 2 X (X= SbF6, AsF6) is studied by resistive measurements under uniaxial compression. TC once increases and takes a maximum under compression parallel to the donor stack while it decreases under compression perpendicular to the donor stack. These results are in agreement with the half-filled Hubbard model on the triangular lattice in which the compression controls the spin fluctuation and frustration in the weak pressure region.",

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AU - Kuroda, Shin Ichi

AU - Suzuki, Takeo

AU - Onari, Seiichiro

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AU - Yamada, Jun Ichi

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