Tunneling into current-carrying surface states of high- Tc superconductors

M. Fogelström, D. Rainer, J. A. Sauls

Research output: Contribution to journalArticlepeer-review

528 Scopus citations

Abstract

Theoretical results for the ab-plane tunneling conductance in the d-wave model for high- Tc superconductors are presented. The d-wave model predicts surface bound states below the maximum gap. A subdominant order parameter, stabilized by the surface, leads to a splitting of the zero-bias conductance peak (ZBCP) in zero external field and to spontaneous surface currents. In a magnetic field, screening currents shift the bound state spectrum, leading to a splitting of the ZBCP that is linear in H at low fields and saturates at a pair breaking critical field of order Hc* ≃ 3T.

Original languageEnglish (US)
Pages (from-to)281-284
Number of pages4
JournalPhysical review letters
Volume79
Issue number2
DOIs
StatePublished - Jul 14 1997

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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