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

Research output: Contribution to journalArticle

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 languageEnglish
Article number172506
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number17
DOIs
Publication statusPublished - Nov 14 2008
Externally publishedYes

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Spin fluctuations
Hubbard model
frustration
Superconductivity
Superconducting materials
Superconducting transition temperature
superconductivity
Salts
organic superconductors
transition temperature
salts
thymidine 5'-triphosphate

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

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 journalArticle

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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AU - Tanaka, Hisaaki

AU - Kuroda, Shin Ichi

AU - Suzuki, Takeo

AU - Onari, Seiichiro

AU - Tanaka, Yukio

AU - Yamada, Jun Ichi

AU - Kikuchi, Koichi

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