Probing the Superconducting Proximity Effect in NbSe{sub 2} by Scanning Tunneling Microscopy

Journal Article · Mon Jul 01 04:00:00 EDT 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.77.924· OSTI ID:288838

Tessmer, S H; Tarlie, M B; Van Harlingen, D J; Maslov, D L; Goldbart, P M ^[1]

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1. Department of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801 (United States)

Cryogenic scaling tunneling microscopy has been used as a local probe of the superconducting proximity effect across a normal metal{endash}superconductor interface of a short coherence length superconductor. Both the topography and the local electronic density of states were measured on a superconducting NbSe{sub 2} crystal decorated with nanometer-size Au islands. The presence of a quasiparticle bound state could be inferred even when the probe was located directly on the bare NbSe{sub 2} surface near an Au island, indicating a severe depression of the pair potential inside the superconductor due to the proximity effect. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: University of Illinois
• DOE Contract Number: FG02-91ER45439
• OSTI ID: 288838
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 5 Vol. 77; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALKYLATING AGENTS
BOUND STATE
ELECTRON MICROSCOPY
ENERGY-LEVEL DENSITY
NIOBIUM SELENIDES
PAIRING INTERACTIONS
PROXIMITY EFFECT
SUPERCONDUCTIVITY
TOPOGRAPHY