Title

Density of states in d-wave superconductors disordered by extended impurities

Document Type

Article

Publication Date

10-1-2002

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 certain one-dimensional random tight-binding models. The states under discussion should be distinguished from those associated with nodes in the pair potential.

Publication Source (Journal or Book title)

Physical Review B - Condensed Matter and Materials Physics

First Page

1405121

Last Page

1405124

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