激子-凝聚约瑟夫森结中的阻塞和逆流超电流
Blockade and Counterflow Supercurrent in exciton-condensate Josephson junctions
摘要：
我们证明了超导体中的带电超电流和电子-空穴对凝聚体中的中性超电流之间的完美转换是可能的，通过一个新的类Andreev散射机制。因此，当两个超导电路通过双层激子凝聚耦合时，两层中的超流被急剧修改。根据相位偏置，超电流可以被完全阻挡或表现出完美的阻力。
英文摘要：
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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