Blockade and Counterflow Supercurrent in Exciton-Condensate Josephson Junctions
Fabrizio Dolcini, Diego Rainis, Fabio Taddei, Marco Polini, Rosario Fazio, A. H. MacDonald
DOI 10.1103/PhysRevLett.104.027004 · Physical Review Letters
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Abstract
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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