Interface-induced superconductivity in Pd films on SrS

Journal Article · Mon Jun 25 00:00:00 EDT 2012 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4732364· OSTI ID:22068994

Suergers, C; Cosceev, A; Boyen, H -G; Loehneysen, H V ^[1]

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1. Karlsruhe Institute of Technology, Physikalisches Institut and DFG Center for Functional Nanostructures, P.O. Box 6980, 76049 Karlsruhe (Germany)

Thin Pd films have been deposited by electron-beam evaporation on insulating SrS grown on Si(111) substrates. The films have been characterized with respect to structure, composition, and electronic transport properties. Pd films with thickness d{sub Pd}= 7 nm are superconducting below a transition temperature T{sub c}= 0.85 K. The origin of superconductivity is possibly due to the formation of an interfacial Pd-S alloy as suggested by Auger and x-ray photoelectron spectroscopy. Films with d{sub Pd}{>=} 10 nm are not superconducting due to the proximity effect of the unreacted S-free upper part of the Pd film.

• OSTI ID: 22068994
• Journal Information: AIP Conference Proceedings, Vol. 1451, Issue 1; Conference: Indian Vacuum Society symposium on thin films, Mumbai (India), 9-12 Nov 2011; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
AUGER ELECTRON SPECTROSCOPY
CRYSTAL STRUCTURE
ELECTRON BEAMS
EVAPORATION
INTERFACES
PALLADIUM
PROXIMITY EFFECT
STRONTIUM SULFIDES
SUBSTRATES
SUPERCONDUCTIVITY
THIN FILMS
TRANSITION TEMPERATURE
VACUUM COATING
X-RAY PHOTOELECTRON SPECTROSCOPY