Published January 1, 2021 | Version v1
Journal article Open

Transverse spin polarization of a Rashba-Zeeman-coupled Fermi superfluid

Creators

  • 1. Koc Univ, Dept Phys, Rumelifeneri Yolu, TR-34450 Istanbul, Turkey

Description

We apply the Bogoliubov-de Gennes theory to a superfluid Fermi gas that is confined to a disc, and analyze its transverse spin polarization that is produced by the simultaneous presence of an out-of-plane Zeeman field and an in-plane Rashba spin-orbit coupling. This is a finite-size effect whose physical origin is directly associated with the equilibrium mass-current density. Our numerical findings for the ground state suggest a bulk-boundary correspondence between characteristic features of the edge-bound transverse polarization and the changes in the momentum-space topology of the bulk.

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