Functional renormalization group for d-wave superconductivity in Hubbard type models
强关联电子
2008-11-26 v2 超导电性
高能物理 - 理论
摘要
The temperature dependence of d-wave superconducting order for two dimensional fermions with d-wave attraction is investigated by means of the functional renormalization group with partial bosonization. Below the critical temperature T_c we find superconductivity, a gap in the electron propagator and a temperature dependent anomalous dimension. At T_c the renormalized "superfluid density" jumps and the approach to T_c from above is characterized by essential scaling. These features are characteristic for a phase transition of the Kosterlitz-Thouless (KT) type.
引用
@article{arxiv.cond-mat/0608667,
title = {Functional renormalization group for d-wave superconductivity in Hubbard type models},
author = {H. C. Krahl and C. Wetterich},
journal= {arXiv preprint arXiv:cond-mat/0608667},
year = {2008}
}
备注
5 pages, 4 figures, references added, discussion improved