Blockade and counterflow supercurrent in exciton-condensate Josephson junctions.
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.
Dolcini
Fabrizio
F
NEST-CNR-INFM and Scuola Normale Superiore, I-56126 Pisa, Italy.
Rainis
Diego
D
Taddei
Fabio
F
Polini
Marco
M
Fazio
Rosario
R
Macdonald
A H
AH