TY - JOUR
T1 - Roles of spin fluctuation and frustration in the superconductivity of β-(BDA-TTP)2X (X=SbF6, AsF6) under uniaxial compression
AU - Ito, Hiroshi
AU - Ishihara, Tetsuo
AU - Tanaka, Hisaaki
AU - Kuroda, Shin Ichi
AU - Suzuki, Takeo
AU - Onari, Seiichiro
AU - Tanaka, Yukio
AU - Yamada, Jun Ichi
AU - Kikuchi, Koichi
PY - 2008/11/14
Y1 - 2008/11/14
N2 - 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.
AB - 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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U2 - 10.1103/PhysRevB.78.172506
DO - 10.1103/PhysRevB.78.172506
M3 - Article
AN - SCOPUS:57349194556
VL - 78
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 17
M1 - 172506
ER -