Long range crossed Andreev reflections in high Tc superconductors

Details Long range crossed Andreev reflections in high Tc superconductors Long range crossed Andreev reflections in high Tc superconductors

2009-01-29

arxiv.org/abs/0901.4768v1

Phys. Rev. B 79, 014520 (2009)

Physics

Condensed Matter

Superconductivity

5 pages, 5 figures

Scientific paper

10.1103/PhysRevB.79.014520

We analyze the non-local transport properties of a d-wave superconductor coupled to metallic electrodes at nanoscale distances. We show that the non-local conductance exhibits an algebraical decay with distance rather than the exponential behavior which is found in conventional superconductors. Crossed Andreev processes, associated with electronic entanglement, are favored for certain orientations of the symmetry axes of the superconductor with respect to the leads. These properties would allow its experimental detection using present technologies.

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