Blockade and Counterflow Supercurrent in exciton-condensate Josephson junctions

Details Blockade and Counterflow Supercurrent in exciton-condensate Josephson junctions Blockade and Counterflow Supercurrent in exciton-condensate Josephson junctions

2009-08-04

arxiv.org/abs/0908.0478v2

Phys. Rev. Lett. 104, 027004 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.104.027004

We demonstrate that perfect conversion between charged supercurrents in superconductors and neutral supercurrents in electron-hole pair condensates is possible via a new Andreev-like scattering mechanism. As a result, when two superconducting circuits are coupled through a bilayer exciton condensate, the superflow in both layers is drastically modified. Depending on the phase biases the supercurrents can be completely blocked or exhibit perfect drag.

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