Nonreciprocal superconducting transport in non-centrosymmetric low-dimensional materials

Nonreciprocal transport is now recognized as a powerful probe of characteristic electronics states and charge/spin dynamics as well as being a useful functionality in quantum materials. Especially, nonreciprocal superconducting transport will provide unique information about paring symmetry, superconducting fluctuations, and charge/vortex dynamics.

In this presentation, I will talk about our work on the nonreciprocal superconducting transport in non-centrosymmetric low-dimensional superconductors under and without a magnetic field [1-6] and their possible microscopic origins including nonreciprocal paraconductivity and vortex Rachet motions. I will introduce the characteristic crossover behavior between these mechanisms and also quantum/classical vortex motions probed by the nonreciprocal transport. Possible future directions of nonreciprocal superconducting transport as a probe of exotic quantum dynamics in non-centrosymmetric superconductors will be also discussed.