Quasiparticle current in ballistic NcN'S junctionsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Nonstationary properties of ballistic constrictions NcN'S with disordered N'S electrodes are analyzed theoretically. Amplitudes of Andreev and normal reflections at the constriction are related to the solutions of a stationary Green's function problem in an inhomogeneous N'S electrode in a dirty limit. This provides a generalization of the model of Blender, Tinkham and Klapwijk for a spatially inhomogeneous case. The relation between quasiparticle current in NcN'S junctions and the energy spectrum of a N'S proximity sandwich is found for arbitrary parameters of N' and S materials and of the N'S interface.