TY - JOUR
T1 - Odd-frequency superconductivity in the 2D extended Hubbard model
AU - Yada, Keiji
AU - Shimokaji, Yuichiro
AU - Onari, Seiichiro
AU - Tanaka, Yukio
AU - Miyake, Kazumasa
PY - 2008/12
Y1 - 2008/12
N2 - It is an intriguing problem to clarify whether the odd-frequency superconducting state can be derived from a microscopic model or not, where the pairing function has odd parity in frequency. We study the instability of even-frequency and odd-frequency pairings on the extended Hubbard model in a 2D triangular lattice, with off-site Coulomb interaction V and on-site Coulomb interaction U. By using the random phase approximation (RPA), we find that the instability of odd-frequency spin-triplet s-wave pairing can be dominant with increasing V.
AB - It is an intriguing problem to clarify whether the odd-frequency superconducting state can be derived from a microscopic model or not, where the pairing function has odd parity in frequency. We study the instability of even-frequency and odd-frequency pairings on the extended Hubbard model in a 2D triangular lattice, with off-site Coulomb interaction V and on-site Coulomb interaction U. By using the random phase approximation (RPA), we find that the instability of odd-frequency spin-triplet s-wave pairing can be dominant with increasing V.
KW - A. Superconductors
KW - D. Phase transitions
KW - D. Spin-density waves
KW - D. Superconductivity
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U2 - 10.1016/j.jpcs.2008.06.079
DO - 10.1016/j.jpcs.2008.06.079
M3 - Article
AN - SCOPUS:57049149578
SN - 0022-3697
VL - 69
SP - 3321
EP - 3323
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 12
ER -