Realization of Berezinskii's superconductivity in quasi-one-dimensional systems
arXiv:1005.4755 · doi:10.1103/PhysRevB.83.140509
Abstract
We revisit the pairing symmetry competition in quasi-one-dimensional systems. We show that spin-triplet s-wave pairing, where the pair is formed by electrons with different times and has an odd-frequency symmetry, can be realized in systems with strong one-dimensionality when the strength of charge fluctuation dominates over spin fluctuation. The present study provides a novel microscopic mechanism for this exotic pairing originally proposed by Berezinskii in 1974.
4 pages, 4 figures