Low temperature electronic properties of Sr_2RuO_4 II: Superconductivity
Strongly Correlated Electrons
2009-11-07 v1 Superconductivity
Abstract
The body centered tetragonal structure of Sr_2RuO_4 gives rise to umklapp scattering enhanced inter-plane pair correlations in the d_{yz} and d_{zx} orbitals. Based on symmetry arguments, Hund's rule coupling, and a bosonized description of the in-plane electron correlations the superconducting order parameter is found to be a orbital-singlet spin-triplet with two spatial components. The spatial anisotropy is 7%. The different components of the order parameter give rise to two-dimensional gapless fluctuations. The phase transition is of third order. The temperature dependence of the pair density, specific heat, NQR, Knight shift, and susceptibility are in agreement with experimental results.
Keywords
Cite
@article{arxiv.cond-mat/0208307,
title = {Low temperature electronic properties of Sr_2RuO_4 II: Superconductivity},
author = {Ralph Werner},
journal= {arXiv preprint arXiv:cond-mat/0208307},
year = {2009}
}
Comments
20 pages REVTEX, 3 figures