Giant backscattering peak in angle-resolved Andreev reflection
C. W. J. Beenakker, J. A. Melsen, P. W. Brouwer
DOI 10.1103/PhysRevB.51.13883 · Physical Review B
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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/G0 (where G is the conductance of the junction and G0=2e2/h). The enhanced backscattering can be detected by means of ballistic point contacts.
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