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Communication Dans Un Congrès Année : 2004

Large energy dependence of current noise in superconducting/normal metal junctions

Résumé

Interference of electronic waves undergoing Andreev reflection in diffusive conductors determines the energy profile of the conductance on the scale of the Thouless energy. A similar dependence exists in the current noise, but its behavior is known only in few limiting cases. We consider a metallic diffusive wire connected to a superconducting reservoir through an interface characterized by an arbitrary distribution of channel transparencies. Within the quasiclassical theory for current fluctuations we provide a general expression for the energy dependence of the current noise. We derive closed analytical expressions for large energy.

Dates et versions

hal-00133112 , version 1 (23-02-2007)

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F. Pistolesi, M. Houzet. Large energy dependence of current noise in superconducting/normal metal junctions. MS+S 2004 NTT, 2004, Atsugi, Japan. ⟨hal-00133112⟩
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