Superfluid Suppression in d-Wave Superconductors due to Disordered Magnetism
Abstract
The influence of static magnetic correlations on the temperature-dependent superfluid density \rho_s(T) is calculated for d-wave superconductors. In self-consistent calculations, itinerant holes form incommensurate spin density waves (SDW) which coexist with superconductivity. In the clean limit, the density of states is gapped, and \rho_s(T << T_c) is exponentially activated. In inhomogeneously-doped cases, the SDW are disordered and both the density of states and \rho_s(T) obtain forms indistinguishable from those in dirty but pure d-wave superconductors, in accordance with experiments. We conclude that the observed collapse of \rho_s at x\approx 0.35 in underdoped YBCO may plausibly be attributed to the coexistence of SDW and superconductivity.
Cite
@article{arxiv.cond-mat/0610041,
title = {Superfluid Suppression in d-Wave Superconductors due to Disordered Magnetism},
author = {W. A. Atkinson},
journal= {arXiv preprint arXiv:cond-mat/0610041},
year = {2009}
}
Comments
6 pages, 5 figures. Expanded discussion