Supercurrent diode effect and finite-momentum superconductors.

Yuan, Noah F Q; Fu, Liang · Proc Natl Acad Sci U S A · 2022

basic_science · Level V

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Abstract

SignificanceOur work shows a fascinating application of finite-momentum superconductivity, the supercurrent diode effect, which is being reported in a growing number of experiments. We show that, under external magnetic field, Cooper pairs can acquire finite momentum so that critical currents in the direction parallel and antiparallel to the Cooper pair momentum become unequal.