Proximity Effect in Gold-Coated [Formula presented] Films Studied by Scanning Tunneling Spectroscopy

Amos Sharoni; Itay Asulin; Gad Koren; Oded Millo

doi:10.1103/PhysRevLett.92.017003

Proximity Effect in Gold-Coated [Formula presented] Films Studied by Scanning Tunneling Spectroscopy

Amos Sharoni, Itay Asulin, Gad Koren, Oded Millo^*

^*Corresponding author for this work

Racah Institute of Physics

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

5 Scopus citations

Abstract

Scanning tunneling spectroscopy on gold layers overcoating [Formula presented]-axis [Formula presented] (YBCO) films reveals proximity-induced gap structures. The gap size reduces exponentially with the distance from [Formula presented]-axis facets, indicating that the proximity effect is primarily due to the (100) YBCO facets. The penetration depth of superconductivity into the gold is [Formula presented], in good agreement with estimations for the dirty limit. The extrapolated gap at the interface is [Formula presented], similar to the value of an [Formula presented]-wave component of the order parameter measured at the YBCO surface in recent point-contact experiments.

Original language	American English
Pages (from-to)	4
Number of pages	1
Journal	Physical Review Letters
Volume	92
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.92.017003
State	Published - 2004

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title = "Proximity Effect in Gold-Coated [Formula presented] Films Studied by Scanning Tunneling Spectroscopy",

abstract = "Scanning tunneling spectroscopy on gold layers overcoating [Formula presented]-axis [Formula presented] (YBCO) films reveals proximity-induced gap structures. The gap size reduces exponentially with the distance from [Formula presented]-axis facets, indicating that the proximity effect is primarily due to the (100) YBCO facets. The penetration depth of superconductivity into the gold is [Formula presented], in good agreement with estimations for the dirty limit. The extrapolated gap at the interface is [Formula presented], similar to the value of an [Formula presented]-wave component of the order parameter measured at the YBCO surface in recent point-contact experiments.",

author = "Amos Sharoni and Itay Asulin and Gad Koren and Oded Millo",

year = "2004",

doi = "10.1103/PhysRevLett.92.017003",

language = "American English",

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journal = "Physical Review Letters",

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AU - Sharoni, Amos

AU - Asulin, Itay

AU - Koren, Gad

AU - Millo, Oded

PY - 2004

Y1 - 2004

N2 - Scanning tunneling spectroscopy on gold layers overcoating [Formula presented]-axis [Formula presented] (YBCO) films reveals proximity-induced gap structures. The gap size reduces exponentially with the distance from [Formula presented]-axis facets, indicating that the proximity effect is primarily due to the (100) YBCO facets. The penetration depth of superconductivity into the gold is [Formula presented], in good agreement with estimations for the dirty limit. The extrapolated gap at the interface is [Formula presented], similar to the value of an [Formula presented]-wave component of the order parameter measured at the YBCO surface in recent point-contact experiments.

AB - Scanning tunneling spectroscopy on gold layers overcoating [Formula presented]-axis [Formula presented] (YBCO) films reveals proximity-induced gap structures. The gap size reduces exponentially with the distance from [Formula presented]-axis facets, indicating that the proximity effect is primarily due to the (100) YBCO facets. The penetration depth of superconductivity into the gold is [Formula presented], in good agreement with estimations for the dirty limit. The extrapolated gap at the interface is [Formula presented], similar to the value of an [Formula presented]-wave component of the order parameter measured at the YBCO surface in recent point-contact experiments.

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DO - 10.1103/PhysRevLett.92.017003

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SP - 4

JO - Physical Review Letters

JF - Physical Review Letters

IS - 1

ER -

Proximity Effect in Gold-Coated [Formula presented] Films Studied by Scanning Tunneling Spectroscopy

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