Zero bias conductance peak enhancement in Bi2Sr2CaCu2O8/Pb tunneling junctions

Saion Sinha; K. W. Ng

doi:10.1006/spmi.1999.0721

Zero bias conductance peak enhancement in Bi₂Sr₂CaCu₂O₈/Pb tunneling junctions

Saion Sinha, K. W. Ng

Research output: Contribution to journal › Article › peer-review

Abstract

Recently, there has been tremendous interest on a tunneling feature called zero bias conductance peak (ZBCP) commonly found in high T_c superconductor tunnel junctions. The interest stemmed from the feature's root in the d-wave symmetry of high T_c 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 language	English
Pages (from-to)	1055-1066
Number of pages	12
Journal	Superlattices and Microstructures
Volume	25
Issue number	5
DOIs	https://doi.org/10.1006/spmi.1999.0721
State	Published - 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

Access to Document

10.1006/spmi.1999.0721

Cite this

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title = "Zero bias conductance peak enhancement in Bi2Sr2CaCu2O8/Pb tunneling junctions",

abstract = "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.",

author = "Saion Sinha and Ng, {K. W.}",

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.",

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AU - Ng, K. W.

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