Two-Particle Self-Consistent Approach to Anisotropic Superconductivity
Strongly Correlated Electrons
2012-03-21 v1 Superconductivity
Abstract
A nonperturbative approach to anisotropic superconductivity is developed based on the idea of two-particle self-consistent (TPSC) theory by Vilk and Tremblay. A sum-rule which the momentum-dependent pairing susceptibility satisfies is derived. An effective pairing interaction between quasiparticles is determined so that the susceptibility should fulfill this exact sum-rule, in which fluctuations belonging to different symmetries couple at finite momentum. It is demonstrated that the mode coupling between d-wave and s-wave pairing fluctuations leads to suppression of the d-wave fluctuation near the Mott insulator.
Keywords
Cite
@article{arxiv.1112.4701,
title = {Two-Particle Self-Consistent Approach to Anisotropic Superconductivity},
author = {Junya Otsuki},
journal= {arXiv preprint arXiv:1112.4701},
year = {2012}
}
Comments
7 pages, 5 figures