J. Phys. Soc. Jpn. 82, 104702 (2013) [5 Pages]

Possible Odd-Frequency Pairing in Quasi-One-Dimensional Organic Superconductors (TMTSF)2X

+ Affiliations
1Department of Applied Physics, Nagoya University, Nagoya 464-8603, Japan

In order to clarify a pairing symmetry in quasi-one-dimensional organic superconductors (TMTSF)2 \(X\), we investigate the superconducting state in the extended Hubbard model on a quarter-filled square lattice within the random phase approximation. We find that a competition among four pairing states including odd-frequency pairing occurs in the quasi-one-dimensional system where the \(2k_{\text{F}}\) spin fluctuation coexists with the \(2k_{\text{F}}\) charge fluctuation. We suggest that the odd-frequency pairing can appear in a realistic parameter.

©2013 The Physical Society of Japan