TY - JOUR
T1 - Proximity Effect in Gold-Coated [Formula presented] Films Studied by Scanning Tunneling Spectroscopy
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.
UR - http://www.scopus.com/inward/record.url?scp=85038331821&partnerID=8YFLogxK
U2 - 10.1103/physrevlett.92.017003
DO - 10.1103/physrevlett.92.017003
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C2 - 14754012
AN - SCOPUS:85038331821
SN - 0031-9007
VL - 92
SP - 4
JO - Physical Review Letters
JF - Physical Review Letters
IS - 1
ER -