Low-energy quasiparticle states near extended scatterers in d-wave superconductors and their connection with susy quantum mechanics

Inanc Adagideli, Paul M. Goldbart, Alexander Shnirman, Ali Yazdani

Research output: Contribution to journalArticle

40 Scopus citations

Abstract

Low-energy quasiparticle states, arising from scattering by single-particle potentials in d-wave superconductors, are addressed. Via a natural extension of the Andreev approximation, the idea that sign variations in the superconducting pair potential lead to such states is extended beyond its original setting of boundary scattering to the broader context of scattering by general single-particle potentials, such as those due to impurities. The index-theoretic origin of these states is exhibited via a simple connection with Witten’s supersymmetric quantum-mechanical model.

Original languageEnglish (US)
Pages (from-to)5571-5574
Number of pages4
JournalPhysical review letters
Volume83
Issue number26
DOIs
StatePublished - Jan 1 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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