Electronic Resource
Dessau, D. S.
;
Wells, B. O.
;
Shen, Z.-X.
;
[et al.]
Spicer, W. E.
;
Arko, A. J.
;
List, R. S.
;
Olson, C. G.
;
Eom, C. B.
;
Mitzi, D. B.
;
Kapitulnik, A.
;
Geballe, T. H.
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
58 (1991), S. 1332-1334
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We have used high-resolution photoemission spectroscopy to search for a proximity effect induced superconducting gap in gold overlayers on c-axis single crystals of Bi2Sr2CaCu2O8 and a-axis thin films of YBa2Cu3O7. These two junction types give us a representative sampling of very well characterized near-ideal interfaces (gold/c-axis Bi2Sr2CaCu2O8) and junctions in which the geometry more strongly favors the existence of the proximity effect but the interfacial quality may not be as ideal (gold/a-axis YBa2Cu3O7). In neither of these junction types did we observe any evidence for a proximity effect induced gap, and we place an upper limit of approximately 5 meV on its existence in the junctions that we have studied.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.104301
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