Spin Density Wave Fluctuations and p-wave Pairing in Sr2RuO4
Abstract
Recently a debate has arisen over which of the two distinct parts of the Fermi surface of Sr2RuO4, is the active part for the chiral p-wave superconductivity. Early theories proposed p-wave pairing on the two dimensional gamma-band, while a recent proposal focuses on the one dimensional (alpha,beta) bands whose nesting pockets are the source of the strong incommensurate spin density wave (SDW) fluctuations. We apply a renormalization group theory to study quasi-one dimensional repulsive Hubbard chains and explain the form of SDW fluctuations, reconciling the absence of long range order with their nesting Fermi surface. The mutual exclusion of p-wave pairing and SDW fluctuations in repulsive Hubbard chains favors the assignment of the two dimensional gamma-band as the source of p-wave pairing.
Cite
@article{arxiv.1301.2865,
title = {Spin Density Wave Fluctuations and p-wave Pairing in Sr2RuO4},
author = {J. Huo and T. M. Rice and Fu-Chun Zhang},
journal= {arXiv preprint arXiv:1301.2865},
year = {2013}
}
Comments
5 pages, 2 figures