Scanning tunneling spectroscopy of NbSe2-Au proximity junctions

A. D. Truscott, R. C. Dynes, Lynn Schneemeyer

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Abstract

The proximity induced excitation spectrum of thin gold layers on superconducting NbSe2 (S) has been measured as a function of gold thickness with a low temperature scanning tunneling microscope. The resulting conductance spectrum is dominated by a quasiparticle bound state below ΔS with an energy dependence strongly influenced by the suppression of the order parameter in S near the interface. In addition, a significant change in the induced spectrum can be directly related to the sample morphology as determined by imaging. A simple model will be used to interpret the results.

Original languageEnglish
Pages (from-to)1014-1017
Number of pages4
JournalPhysical Review Letters
Volume83
Issue number5
DOIs
StatePublished - 1 Jan 1999

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