Andreev reflection in bosonic condensates

Details Andreev reflection in bosonic condensates Andreev reflection in bosonic condensates

2008-04-29

arxiv.org/abs/0804.4631v3

Phys. Rev. Lett. 102, 180405 (2009)

Physics

Condensed Matter

Other Condensed Matter

5 pages, 3 figures. Text revised

Scientific paper

10.1103/PhysRevLett.102.180405

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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