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.
|Number of pages||12|
|Journal||Superlattices and Microstructures|
|State||Published - May 1999|
Bibliographical noteFunding 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
- Materials Science (all)
- Condensed Matter Physics
- Electrical and Electronic Engineering