Coherent Electron Transport in Superconducting-Normal Metallic Films
Frank K. Wilhelm, Andrei D. Zaikin, Hervé Courtois
DOI 10.1103/PhysRevLett.80.4289 · Physical Review Letters
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Abstract
We study the transport properties of a quasi-two-dimensional diffusive normal metal film attached to a superconductor. We demonstrate that the properties of such films can essentially differ from those of quasi-one-dimensional systems: In the presence of the proximity-induced superconductivity in a sufficiently wide film, its conductance may not only increase but also decrease with temperature. We develop a quantitative theory and discuss the physical nature of this effect. Our theory provides a natural explanation for recent experimental findings referred to as the “anomalous proximity effect.”
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Ag Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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