Rotating a Rashba-coupled Fermi gas in two dimensions

Abstract

We analyze the interplay of adiabatic rotation and Rashba spin-orbit coupling on the BCS-BEC evolution of a harmonically-trapped Fermi gas in two dimensions under the assumption that vortices are not excited. First, by taking the trapping potential into account via both the semi-classical and exact quantum-mechanical approaches, we firmly establish the parameter regime where the non-interacting gas forms a ring-shaped annulus. Then, by taking the interactions into account via the BCS mean-field approximation, we study the pair-breaking mechanism that is induced by rotation, i.e., the Coriolis effects. In particular, we show that the interplay allows for the possibility of creating either an isolated annulus of rigidly-rotating normal particles that is disconnected from the central core of non-rotating superfluid pairs or an intermediate mediator phase where the superfluid pairs and normal particles coexist as a partially-rotating gapless superfluid.

8 pages with 6 figures

References in corpus (16)

• Vortices and Superfluidity in a Strongly Interacting Fermi Gas
• Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
• Non-Abelian gauge potentials for ultra-cold atoms with degenerate dark states
• Experimental realization of a two-dimensional synthetic spin-orbit coupling in ultracold Fermi gases
• Radiofrequency spectroscopy of a strongly interacting two-dimensional Fermi gas
• Observation of a two-dimensional Fermi gas of atoms
• Tunable Spin-Orbit Coupling via Strong Driving in Ultracold Atom Systems
• Observation of pair condensation in the quasi-2D BEC-BCS crossover
• BCS-BEC crossover induced by a synthetic non-Abelian gauge field
• Crossover from 2D to 3D in a weakly interacting Fermi gas
• Mass flows and angular momentum density for $p_x+i{p}_y$ paired fermions in a harmonic trap
• Pair-Breaking in Rotating Fermi Gases
• Destroying superfluidity by rotating a Fermi gas at unitarity
• Vortex formation in a rotating two-component Fermi gas
• Unitary polarized Fermi gas under adiabatic rotation
• Polarization of a quasi two-dimensional repulsive Fermi gas with Rashba spin-orbit coupling: a variational study

Cited by in corpus (5)

• Phase transition and intrinsic metric of the dipolar fermions in quantum Hall regime
• Interplay between Rashba spin-orbit coupling and adiabatic rotation in a two-dimensional Fermi gas
• Spin Hall mode in a trapped thermal Rashba gas
• Fractional quantum Hall interface induced by geometric singularity
• Topological phase transition in a two-species fermion system: Effects of a rotating trap potential or a synthetic gauge field