Exotic pairing states in a Fermi gas with three-dimensional spin-orbit coupling
arXiv:1302.1303 · doi:10.1103/PhysRevA.87.063606
Abstract
We investigate properties of exotic pairing states in a three-dimensional Fermi gas with three-dimensional spin-orbit coupling and an effective Zeeman field. The interplay of spin-orbit coupling, effective Zeeman field and pairing can lead to first-order phase transitions between different phases, and to interesting nodal superfluid states with gapless surfaces in the momentum space. We then demonstrate that pairing states with zero center-of-mass momentum are unstable against finite center-of-mass momentum Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states, with the center-of-mass momentum of the pairs opposite to the direction of the effective Zeeman field. Unlike conventional FFLO states, these FFLO states are induced by the coexistence of spin-orbit coupling and Fermi surface deformation, and have intriguing features like first-order transitions between different FFLO states, nodal FFLO states with gapless surfaces in momentum space, and exotic fully gapped FFLO states. With the recent theoretical proposals for realizing three-dimensional spin-orbit coupling in ultracold atom gases, our work is helpful for the future experimental studies, and provides valuable information for the general understanding of pairing physics in spin-orbit coupled fermionic systems.
9 pages, 8 figures, replaced with the published version
References in corpus (17)
- Many-Body Physics with Ultracold Gases
- Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
- Non-Abelian Topological Order in S-Wave Superfluids of Ultracold Fermionic Atoms
- Spin-Orbit Coupled Spinor Bose-Einstein Condensates
- superfluid from s-wave interactions of fermionic cold atoms
- BEC-BCS crossover, phase transitions and phase separation in polarized resonantly-paired superfluids
- Effect of Induced Spin-Orbit Coupling for Atoms via Laser Fields
- Stable Skyrmions in SU(2) Gauged Bose-Einstein Condensates
- Wilson Fermions and Axion Electrodynamics in Optical Lattices
- BCS-BEC crossover induced by a synthetic non-Abelian gauge field
- Unconventional superfluid in a two-dimensional Fermi gas with anisotropic spin-orbit coupling and Zeeman fields
- Route to Observable Fulde-Ferrell-Larkin-Ovchinnikov Phases in 3D Spin-Orbit Coupled Degenerate Fermi Gases
- Topologically non-trivial superconductivity in spin-orbit coupled systems: Bulk phases and quantum phase transitions
- Finite-Momentum Dimer Bound State in Spin-Orbit Coupled Fermi Gas
- Inhomogeneous Fulde-Ferrell superfluidity in spin-orbit coupled atomic Fermi gases
- Modified Bethe-Peierls boundary condition for ultracold atoms with Spin-Orbit coupling
- Molecule and polaron in a highly polarized two-dimensional Fermi gas with spin-orbit coupling
Cited by in corpus (26)
- Degenerate Quantum Gases with Spin-Orbit Coupling
- Topological Fulde-Ferrel-Larkin-Ovchinnikov states in Spin-orbit Coupled Fermi Gases
- The Fulde-Ferrell-Larkin-Ovchinnikov state for ultracold fermions in lattice and harmonic potentials: a review
- Fulde-Ferrell Pairing instability in Spin-Orbit Coupled Fermi Gas
- Enhancement effect of mass imbalance on Fulde-Ferrell-Larkin-Ovchinnikov type of pairing in Fermi-Fermi mixtures of ultracold quantum gases
- Pairing Superfluidity in Spin-Orbit Coupled Ultracold Fermi Gases
- Spin-orbit coupling induced Fulde-Ferrell-Larkin-Ovchinnikov-like Cooper pairing and skyrmion-like polarization textures in trapped optical lattices
- Topological superfluid phases of an atomic Fermi gas with in- and out-of-plane Zeeman fields and equal Rashba-Dresselhaus spin-orbit coupling
- Three-component Ultracold Fermi Gases with Spin-Orbit Coupling
- Gapless topological Fulde-Ferrell superfluidity induced by in-plane Zeeman field
- Fulde-Ferrell superfluidity in ultracold Fermi gases with Rashba spin-orbit coupling
- Unconventional Fulde-Ferrell-Larkin-Ovchinnikov pairing states in a Fermi gas with spin-orbit coupling
- Superfluid density and Berezinskii-Kosterlitz-Thouless transition of a spin-orbit coupled Fulde-Ferrell superfluid
- Three-dimensional spin-orbit coupled Fermi gases: Fulde-Ferrell pairing, Majorana fermions, Weyl fermions and gapless topological superfluidity
- Fulde-Ferrell-Larkin-Ovchinnikov state in spin-orbit-coupled superconductors
- Realizing and detecting Stiefel-Whitney insulators in an optical Raman lattice
- Thermodynamic Properties of Rashba Spin-Orbit-Coupled Fermi Gas
- Effective Hamiltonians for quasi-one-dimensional Fermi gases with spin-orbit coupling
- Superfluid weight and Berezinskii-Kosterlitz-Thouless temperature of spin-imbalanced and spin-orbit-coupled Fulde-Ferrell phases in lattice systems
- Fulde-Ferrell pairing instability of a Rashba spin-orbit coupled Fermi gas
- Weyl spin-orbit-coupling-induced interactions in uniform and trapped atomic quantum fluids
- BCS-BEC crossover and quantum phase transition in an ultracold Fermi gas under spin-orbit coupling
- Dynamical instability towards finite-momentum pairing in quenched BCS superconducting phases
- Critical temperature in the BCS-BEC crossover with spin-orbit coupling
- Novel dynamical excitations and roton-based measurement of Cooper-pair momentum in a two-dimensional Fulde-Ferrell-Larkin-Ovchinnikov superfluid on optical lattices
- Fulde-Ferrell superfluids in an asymmetric three-component Fermi Gas