Scanning tunneling spectroscopy of NbSe2-Au proximity junctions

A. D. Truscott; R. C. Dynes; L. F. Schneemeyer

doi:10.1103/PhysRevLett.83.1014

Scanning tunneling spectroscopy of NbSe₂-Au proximity junctions

A. D. Truscott, R. C. Dynes, L. F. Schneemeyer

Chemistry and Biochemistry

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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 Δ_S 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 language	English
Pages (from-to)	1014-1017
Number of pages	4
Journal	Physical Review Letters
Volume	83
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.83.1014
State	Published - 1 Jan 1999

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10.1103/PhysRevLett.83.1014

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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.",

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N2 - 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.

AB - 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.

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Scanning tunneling spectroscopy of NbSe₂-Au proximity junctions

Abstract

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