Zero-bias peak in tunneling spectra of high- Tc superconductors and its splitting

Y. Asano, R. Sekiguchi, Y. Tanaka, H. Tsuchiura, S. Kashiwaya

Research output: Contribution to journalArticlepeer-review

Abstract

Effects of impurities on the conductance in normal-metal/d-wave superconductor junctions are discussed. By using the single-site approximation, it is shown that the impurity scattering causes the split of the zero-bias conductance peak (ZBCP). So far, the split of the ZBCP at the zero magnetic field has been believed to be a strong evidence of the broken time reversal symmetry states at a surface of a high-Tc superconductor. However we conclude that the impurity scattering is also responsible for the split of the ZBCP.

Original languageEnglish
Pages (from-to)157-161
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume412-414
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2004 Oct 1
Externally publishedYes

Keywords

  • Interfacial roughness
  • Unconventional superconductor
  • Zero-bias conductance peak
  • Zero-energy states

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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