Density of states in d-wave superconductors disordered by extended impurities
Superconductivity
2009-11-07 v2 Strongly Correlated Electrons
Abstract
The low-energy quasiparticle states of a disordered d-wave superconductor are investigated theoretically. A class of such states, formed via tunneling between the Andreev bound states that are localized around extended impurities (and result from scattering between pair-potential lobes that differ in sign) is identified. Its (divergent) contribution to the total density of states is determined by taking advantage of connections with certain one-dimensional random tight-binding models. The states under discussion should be distinguished from those associated with nodes in the pair potential.
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Cite
@article{arxiv.cond-mat/0201339,
title = {Density of states in d-wave superconductors disordered by extended impurities},
author = {Inanc Adagideli and Daniel E. Sheehy and Paul M. Goldbart},
journal= {arXiv preprint arXiv:cond-mat/0201339},
year = {2009}
}
Comments
5 pages, 1 figure