Proximity-effect theory in thickNS sandwiches

Autor: D'yachenko, A. I., Kochergin, I. V.
Zdroj: Journal of Low Temperature Physics; August 1991, Vol. 84 Issue: 3-4 p197-235, 39p
Abstrakt: The tunneling density of states of planeNS sandwiches with a normal interlayer thicknessd is calculated. The self-consistent account of the coordinate dependence of the order parameter both inN andS metals as well as of elastic scattering from impurities was considered. The range of the sandwich parameter values is found, where the density of states can have a double-peak structure even at perfect interface. This double-peak structure was obtained earlier in the tunnel McMillan model, which assumed the presence of the tunneling barrier between theN andS layers. Thus, the Andreev reflection effects can result in a large variety of density of states of thickNS sandwiches and, in particular, to the double-peak structure.
Databáze: Supplemental Index