Research output: Contribution to Journal/Magazine › Letter › peer-review
<mark>Journal publication date</mark> | 1998 |
---|---|
<mark>Journal</mark> | Journal of Physics: Condensed Matter |
Issue number | 35 |
Volume | 10 |
Number of pages | 7 |
Pages (from-to) | L615-L621 |
Publication Status | Published |
<mark>Original language</mark> | English |
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.