Zero bias conductance peak enhancement in Bi2Sr2CaCu2O8/Pb tunneling junctions

Saion Sinha, K. W. Ng

Research output: Contribution to journalArticlepeer-review


Recently, there has been tremendous interest on a tunneling feature called zero bias conductance peak (ZBCP) commonly found in high Tc superconductor tunnel junctions. The interest stemmed from the feature's root in the d-wave symmetry of high Tc superconductors. In this paper we will review results of our study on ZBCP within a Pb/Bi2Sr2CaCu2O8 (BSCCO) tunneling junction. This allows us to investigate the intricate interactions between s- and d-wave superconductivity. The ZBCP indeed demonstrates interesting properties when Pb becomes superconducting. We attribute these results to the suppression of the d-wave phase on the surface of BSCCO by the s-wave superconductivity from Pb through a proximity effect. We will also report some recent results on the magnetic field dependence of the ZBCP.

Original languageEnglish
Pages (from-to)1055-1066
Number of pages12
JournalSuperlattices and Microstructures
Issue number5
StatePublished - May 1999

Bibliographical note

Funding Information:
Acknowledgements—We would like to thank P. Bagwell, S. Datta, A. Gupta, and M. Samanta for many helpful and stimulating discussions. This work is supported by a grant from the National Science Foundation, DMR 9623842.

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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