Three-component Ultracold Fermi Gases with Spin-Orbit Coupling

Abstract

We investigate the pairing physics in a three-component Fermi-Fermi mixture, where a few impurities are immersed in a non-interacting spin-$\frac{1}{2}$ Fermi gas with synthetic spin-orbit coupling (SOC), and interact attractively with one spin species in the Fermi gas. Due to the interplay of SOC and spin-selective interaction, the molecular state intrinsically acquires a non-zero center-of-mass momentum, which results in a new type of Fulde-Ferrell (FF) pairing in spin-orbit coupled Fermi systems. The existence of the Fermi sea can also lead to the competition between FF-like molecular states with different center-of-mass momenta, which corresponds to a first-order transition between FF phases in the thermodynamic limit. As the interaction strength is tuned, a polaron-molecule transition occurs in the highly imbalanced system, where the boundary varies non-monotonically with SOC parameters and gives rise to the reentrance of polaron states. The rich physics in this system can be probed using existing experimental techniques.

5+1.5 pages, 5+1 figures; published version

References in corpus (41)

• A spin-orbit coupled Bose-Einstein condensate
• Spin-Orbit Coupled Degenerate Fermi Gases
• Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
• Non-Abelian Topological Order in S-Wave Superfluids of Ultracold Fermionic Atoms
• Observation of Fermi Polarons in a Tunable Fermi Liquid of Ultracold Atoms
• Collective Dipole Oscillation of a Spin-Orbit Coupled Bose-Einstein Condensate
• Using photoemission spectroscopy to probe a strongly interacting Fermi gas
• Attractive and repulsive Fermi polarons in two dimensions
• Universal phase diagram of a strongly interacting Fermi gas with unbalanced spin populations
• $p_x+i{p}_y$ superfluid from s-wave interactions of fermionic cold atoms
• Spin-Orbit Coupled Quantum Gases
• BCS-BEC Crossover and Topological Phase Transition in 3D Spin-Orbit Coupled Degenerate Fermi Gases
• Realization of 2D Spin-orbit Interaction and Exotic Topological Orders in Cold Atoms
• Superconductivity and Ferromagnetism in Oxide Interface Structures: Possibility of Finite Momentum Pairing
• Probing anisotropic superfluidity of rashbons in atomic Fermi gases
• Spin-Orbit Coupled Fermi Gases across a Feshbach Resonance
• Experimental Determination of the Finite-Temperature Phase Diagram of a Spin-Orbit Coupled Bose Gas
• Normal state of highly polarized Fermi gases: Full many-body treatment
• BCS-BEC crossover induced by a synthetic non-Abelian gauge field
• Topological Fulde-Ferrel-Larkin-Ovchinnikov states in Spin-orbit Coupled Fermi Gases
• Topological Superfluids with Finite Momentum Pairing and Majorana Fermions
• Spin-Orbit Coupling Induced Coherent Production of Feshbach Molecules in a Degenerate Fermi Gas
• BCS-BEC Crossover in 2D Fermi Gases with Rashba Spin-Orbit Coupling
• Unconventional superfluid in a two-dimensional Fermi gas with anisotropic spin-orbit coupling and Zeeman fields
• Stability of spin-orbit coupled Fermi gases with population imbalance
• Searching for Majorana Fermions in 2D Spin-orbit Coupled Fermi Superfluids at Finite Temperature
• Polaron-molecule transitions in a two-dimensional Fermi gas
• Evolution from BCS to BEC superfluidity in the presence of spin-orbit coupling
• Topological superfluid in a trapped two-dimensional polarized Fermi gas with spin-orbit coupling
• Route to Observable Fulde-Ferrell-Larkin-Ovchinnikov Phases in 3D Spin-Orbit Coupled Degenerate Fermi Gases
• Polarons and Molecules in a Two-Dimensional Fermi Gas
• Tuning the Tricritical Point with Spin-orbit Coupling in Polarized Fermionic Condensates
• Phase separation in a polarized Fermi gas with spin-orbit coupling
• Inhomogeneous Topological Superfluidity in One-Dimensional Spin-Orbit-Coupled Fermi Gases
• Condensate fraction of a resonant Fermi gas with spin-orbit coupling in three and two dimensions
• Finite-Momentum Dimer Bound State in Spin-Orbit Coupled Fermi Gas
• Fulde-Ferrell Pairing instability in Spin-Orbit Coupled Fermi Gas
• Topological Fulde-Ferrell superfluid in spin-orbit coupled atomic Fermi gases
• Molecule and polaron in a highly polarized two-dimensional Fermi gas with spin-orbit coupling
• Exotic pairing states in a Fermi gas with three-dimensional spin-orbit coupling
• Flow enhanced pairing and other novel effects in Fermi gases in synthetic gauge fields

Cited by in corpus (18)

• Dirac, Rashba and Weyl type spin-orbit couplings: toward experimental realization in ultracold atoms
• Pairing Superfluidity in Spin-Orbit Coupled Ultracold Fermi Gases
• High-momentum distribution with subleading $k^{-3}$ tail in the odd-wave interacting one-dimensional Fermi gases
• Polarons and Molecules in a Fermi Gas with Orbital Feshbach Resonance
• Three-body correlations in a two-dimensional SU(3) Fermi gas
• Realizing Fulde-Ferrell Superfluids via a Dark-State Control of Feshbach Resonances
• Topological superradiant state in Fermi gases with cavity induced spin-orbit coupling
• Universal trimers emerging from a spin-orbit coupled Fermi sea
• Three-component Fulde-Ferrell superfluids in a two-dimensional Fermi gas with spin-orbit coupling
• Phase diagram, band structure and density of states in two-dimensional attractive Fermi-Hubbard model with Rashba spin-orbit coupling
• Nonlinear Bloch-Zener oscillations for Bose-Einstein condensates in a Lieb optical lattice
• Excitonic states of an impurity in a Fermi gas
• Molecular state in a spin-orbital-angular-momentum coupled Fermi gas
• Impurity in a Fermi gas under non-Hermitian spin-orbit coupling
• Critical temperature in the BCS-BEC crossover with spin-orbit coupling
• A universal pairing gap measurement proposal by dynamical excitations in 2D doped attractive Fermi-Hubbard model with spin-orbit coupling
• Non-universal Fermi polaron in quasi two-dimensional quantum gases
• Fulde-Ferrell superfluids in an asymmetric three-component Fermi Gas