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Josephson diode effect from Cooper pair momentum in a topological semimetal
Banabir Pal1, Anirban Chakraborty, Pranava K. Sivakumar +11
In the presence of an external magnetic field Cooper pairs in noncentrosymmetric superconductors can acquire finite momentum. Recent theory predicts that such finite-momentum pairi…
Topological superfluids in two-dimensional Fermi gas with Rashba spin-orbit coupling
Xiaosen Yang, Ho-Kin Tang, Noah Fan Qi Yuan +4
The realization of spin-orbit coupling (SOC) in ultracold atoms has triggered an intensive exploring of topological superfluids in the degenerate Fermi gases based on mean-field th…
Supercurrent diode effect and finite momentum superconductivity
Noah F. Q. Yuan, Liang Fu
When both inversion and time-reversal symmetries are broken, the critical current of a superconductor can be nonreciprocal. In this work we show that in certain classes of two-dime…