Andreev bound states, surfaces and subdominant pairing in high Tc superconductors

D. Rainer*, H. Burkhardt, M. Fogelström, J. A. Sauls

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

A characteristic feature of the BCS theory of superconductivity is the quantum-mechanical coherence of particle and hole states. Direct observation of particle-hole coherence in unusual superconducting materials is a strong indication of traditional superconductivity. We use the Fermi liquid theory of superconductivity to study the implications of particle-hole coherence on properties of d-wave superconductors near surfaces. Typical surface phenomena are the suppression of the superconducting order parameter, surface bound states associated with Andreev reflection, anomalous screening currents, and spontaneous breaking of time-reversal symmetry. We review these phenomena and present new results for the effects of surface roughness.

Original languageEnglish (US)
Pages (from-to)2040-2044
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume59
Issue number10-12
DOIs
StatePublished - 1998

Keywords

  • Andreev reflection
  • Subdominant pairing
  • Surface roughness

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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