Superfluid Fermi gas with spin-orbit angular momentum coupling
In recent years,there have been significant advances in the study of atomic gases with spin-orbit coupling.Among these,a newly implemented type of spin-orbit coupling,known as spin-orbit angular momentum coupling,has drawn considerable interest due to its unique properties.In this article,we take fermionic gases as an example to introduce the implementation and characteristics of spin-orbit angular momentum coupling,emphasizing its important influence on single-particle spectra and particularly on fermionic superfluidity.By combining mean-field analytical methods and numerical simulations,we analyze the finite angular momentum pairing induced by spin-orbit angular momentum coupling and the resulting ground states of different types of superfluid vortices.Furthermore,we discuss relevant progress and potential future directions.
Fermi gasspin-orbit angular momentum couplingFermi superfluidityvortex state