Proximity-induced transport in superconductor - normal metal nanostructures

Seviour, R and Lambert, C J and Volkov, A F (1998) Proximity-induced transport in superconductor - normal metal nanostructures. Journal of Physics: Condensed Matter, 10 (35). L615-L621. ISSN 0953-8984

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We calculate the conductance for a diffusive normal wire (N) in contact with a superconductor (S). Using a numerical scattering matrix approach and a quasiclassical Green function technique, we compare the conductance G of the system connected to two normal reservoirs when the superconductor is in its normal state with the conductance G(s) in the superconducting state and predict that the difference delta G = G(s) - G may be negative or positive depending upon the S/N interface resistance and the interface resistance at the ends of the N wire. As the temperature T is varied, delta G(T) may change sign and exhibit two maxima.

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Journal Article
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Journal of Physics: Condensed Matter
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24 Oct 2012 14:33
Last Modified:
21 Nov 2022 22:52