The above-gap structure in normal-metal-superconductor junctions

A. Vaknin; Z. Ovadyahu

doi:10.1088/0953-8984/9/19/004

The above-gap structure in normal-metal-superconductor junctions

A. Vaknin^*, Z. Ovadyahu

^*Corresponding author for this work

Racah Institute of Physics

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

5 Scopus citations

Abstract

We report on the observation of zero-bias anomalies and above-the-gap structure in the current-voltage characteristics of Au-InO_x-Pb tunnel junctions. The above-gap modulations appear at energies that scale with the superconductor gap. Following thermal anneals these energies shift randomly in the range 4-20 mV. The conductance changes associated with these anomalies also vary in a non-systematic way and are typically of the order of 10-100 e²/h.

Original language	English
Pages (from-to)	L303-L306
Journal	Journal of Physics Condensed Matter
Volume	9
Issue number	19
DOIs	https://doi.org/10.1088/0953-8984/9/19/004
State	Published - 12 May 1997

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abstract = "We report on the observation of zero-bias anomalies and above-the-gap structure in the current-voltage characteristics of Au-InOx-Pb tunnel junctions. The above-gap modulations appear at energies that scale with the superconductor gap. Following thermal anneals these energies shift randomly in the range 4-20 mV. The conductance changes associated with these anomalies also vary in a non-systematic way and are typically of the order of 10-100 e2/h.",

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N2 - We report on the observation of zero-bias anomalies and above-the-gap structure in the current-voltage characteristics of Au-InOx-Pb tunnel junctions. The above-gap modulations appear at energies that scale with the superconductor gap. Following thermal anneals these energies shift randomly in the range 4-20 mV. The conductance changes associated with these anomalies also vary in a non-systematic way and are typically of the order of 10-100 e2/h.

AB - We report on the observation of zero-bias anomalies and above-the-gap structure in the current-voltage characteristics of Au-InOx-Pb tunnel junctions. The above-gap modulations appear at energies that scale with the superconductor gap. Following thermal anneals these energies shift randomly in the range 4-20 mV. The conductance changes associated with these anomalies also vary in a non-systematic way and are typically of the order of 10-100 e2/h.

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The above-gap structure in normal-metal-superconductor junctions

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