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arXiv · 0804.4631

Andreev reflection in bosonic condensates

I. Zapata·F. Sols
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Abstract

We study the bosonic analog of Andreev reflection at a normal-superfluid interface where the superfluid is a boson condensate. We model the normal region as a zone where nonlinear effects can be neglected. Against the background of a decaying condensate, we identify a novel contribution to the current of reflected atoms. The group velocity of this Andreev reflected component differs from that of the normally reflected one. For a three-dimensional planar or two-dimensional linear interface Andreev reflection is neither specular nor conjugate.

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I. Zapata, F. Sols. 2009-07-22. Andreev reflection in bosonic condensates. https://doi.org/10.1103/physrevlett.102.180405

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