Long range crossed Andreev reflections in high Tc superconductors

Abstract

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.

5 pages, 5 figures

References in corpus (7)

• Scanning tunneling spectroscopy of high-temperature superconductors
• Evidence for crossed Andreev reflection in superconductor-ferromagnet hybrid structures
• Reversing non-local transport through a superconductor by electromagnetic excitations
• Sign of the crossed conductances at a FSF double interface
• Nonlocal Andreev reflection at high transmissions
• Crossed Andreev reflection in diffusive contacts
• Crossed Andreev reflection at ferromagnetic domain walls