Giant Backscattering Peak in Angle-Resolved Andreev Reflection

C. W. J. Beenakker; J. A. Melsen; P. W. Brouwer

doi:10.1103/physrevb.51.13883

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arXiv · cond-mat/9501003

Giant Backscattering Peak in Angle-Resolved Andreev Reflection

C. W. J. Beenakker·J. A. Melsen·P. W. Brouwer

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Abstract

It is shown analytically and by numerical simulation that the angular distribution of Andreev reflection by a disordered normal-metal -- superconductor junction has a narrow peak at the angle of incidence. The peak is higher than the well-known coherent backscattering peak in the normal state, by a large factor G/G_0 (where G is the conductance of the junction and G_0=2e^2/h). The enhanced backscattering can be detected by means of ballistic point contacts.

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C. W. J. Beenakker, J. A. Melsen, P. W. Brouwer. 1995-01-03. Giant Backscattering Peak in Angle-Resolved Andreev Reflection. https://doi.org/10.1103/physrevb.51.13883

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