TY - JOUR
T1 - Spin-triplet superconductivity induced by off-site Coulomb interaction in a triangular lattice
AU - Kimura, Hiroshi
AU - Onari, Seiichiro
AU - Tanaka, Yukio
N1 - Funding Information:
This work was supported by a Grant-in-Aid for 21st Century COE “Frontiers of Computational Science”. Numerical calculations were performed at the supercomputer center, ISSP.
PY - 2008/12
Y1 - 2008/12
N2 - In order to study how superconductivity emerges when the charge fluctuation coexists with the spin fluctuation in a triangular lattice, we obtain a phase diagram against the nearest-neighbor Coulomb repulsion V and band filling n on the extended Hubbard model using the fluctuation exchange (FLEX) approximation. We find that a charge density wave (CDW) phase exists in the region where the value of V is large, and the f-wave spin-triplet pairing mediated by a strong charge fluctuation is dominant near the CDW phase.
AB - In order to study how superconductivity emerges when the charge fluctuation coexists with the spin fluctuation in a triangular lattice, we obtain a phase diagram against the nearest-neighbor Coulomb repulsion V and band filling n on the extended Hubbard model using the fluctuation exchange (FLEX) approximation. We find that a charge density wave (CDW) phase exists in the region where the value of V is large, and the f-wave spin-triplet pairing mediated by a strong charge fluctuation is dominant near the CDW phase.
KW - A. Organic compounds
KW - D. Charge-density waves
KW - D. Spin-density waves
KW - D. Superconductivity
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U2 - 10.1016/j.jpcs.2008.06.134
DO - 10.1016/j.jpcs.2008.06.134
M3 - Article
AN - SCOPUS:57049113720
VL - 69
SP - 3310
EP - 3312
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
SN - 0022-3697
IS - 12
ER -