Probing the Superconducting Proximity Effect in NbSe2 by Scanning Tunneling Microscopy
S. H. Tessmer, M. B. Tarlie, D. J. Van Harlingen, D. L. Maslov, P. M. Goldbart
DOI 10.1103/PhysRevLett.77.924 · Physical Review Letters
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Abstract
Cryogenic scanning tunneling microscopy has been used as a local probe of the superconducting proximity effect across a normal metal–superconductor interface of a short coherence length superconductor. Both the topography and the local electronic density of states were measured on a superconducting NbSe2 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 NbSe2 surface near an Au island, indicating a severe depression of the pair potential inside the superconductor due to the proximity effect.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.2 | Pressure not reported | unknown |
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