Fulde-Ferrell superfluids in an asymmetric three-component Fermi Gas

Abstract:An asymmetric three-component Fermi gas, featuring Raman-induced spin-orbit coupling between the first and second components and contact interaction only between the first and third components, introduces both spin-orbit coupling and population imbalance-two mechanisms known to stabilize the Fulde-Ferrell this http URL systematically study Fulde-Ferrell superfluids in an asymmetric three-component Fermi gas { in two dimensions and at zero temperature} by finding the global minima of the thermodynamic potential. We reveal a new class of composite Fulde-Ferrell superfluids that emerges when strong spin-orbit coupling generates a double-well structure in momentum space within the lower spin-orbit-coupled band. The key features of these composite superfluids are identified.

Quantum Gases (cond-mat.quant-gas); Quantum Physics (quant-ph)

arXiv:2602.24006 [cond-mat.quant-gas]

(or arXiv:2602.24006v2 [cond-mat.quant-gas] for this version)

https://doi.org/10.48550/arXiv.2602.24006 Focus to learn more arXiv-issued DOI via DataCite

https://doi.org/10.1016/j.physleta.2026.131887 Focus to learn more DOI(s) linking to related resources

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