Tuning the Tricritical Point with Spin-orbit Coupling in Polarized Fermionic Condensates

Abstract

We investigate a two-component atomic Fermi gas with population imbalance in the presence of Rashba-type spin-orbit coupling (SOC). As a competition between SOC and population imbalance, the finite-temperature phase diagram reveals a large varieties of new features, including the expanding of the superfluid state regime and the shrinking of both the phase separation and the normal regimes. For sufficiently strong SOC, the phase separation region disappears, giving way to the superfluid state. We find that the tricritical point moves toward regime of low temperature, high magnetic field, and high polarization as the SOC increases.

4 pages, 5 figures

References in corpus (10)

• Theory of ultracold Fermi gases
• Non-Abelian Topological Order in S-Wave Superfluids of Ultracold Fermionic Atoms
• Using photoemission spectroscopy to probe a strongly interacting Fermi gas
• Phase diagram of a two-component Fermi gas with resonant interactions
• Observation of pseudogap behavior in a strongly interacting Fermi gas
• BCS-BEC crossover induced by a synthetic non-Abelian gauge field
• Chiral Rashba spin textures in ultra-cold Fermi gases
• Polarized Fermi condensates with unequal masses: Tuning the tricritical point
• Rashba spin-orbit coupled atomic Fermi gases
• Quantum phases of atomic Fermi gases with anisotropic spin-orbit coupling

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• Pairing Superfluidity in Spin-Orbit Coupled Ultracold Fermi Gases
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• Three-component Ultracold Fermi Gases with Spin-Orbit Coupling
• Short range asymptotic behavior of the wave-functions of interacting spin-half fermionic atoms with spin-orbit coupling: a model study
• BCS-BEC crossover at finite temperature in spin-orbit coupled Fermi gases
• Unconventional Fulde-Ferrell-Larkin-Ovchinnikov pairing states in a Fermi gas with spin-orbit coupling
• Spin-Orbit Coupled Bose Gases at Finite Temperatures
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• Mechanism for enhancement of superconductivity in multi-band systems with odd parity hybridization
• Trapped Fermi gases with Rashba spin-orbit coupling in two dimensions
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• Rotating a Rashba-coupled Fermi gas in two dimensions
• BCS-BEC crossover and quantum phase transition in an ultracold Fermi gas under spin-orbit coupling
• Counterflow of spontaneous mass currents in trapped spin-orbit coupled Fermi gases
• Cooper Pairing in A Doped 2D Antiferromagnet with Spin-Orbit Coupling
• Spin-orbit-induced bound state and molecular signature of the degenerate Fermi gas in a narrow Feshbach resonance
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• Normal state properties of spin-orbit coupled Fermi gases in the upper branch of energy spectrum
• Damping of the Anderson-Bogolyubov mode by spin and mass imbalance in Fermi mixtures
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• Ultra-high mechanical stretchability and controllable topological phase transitions in two-dimensional arsenic
• Thermalization of isolated Bose-Einstein condensate under a PT-symmetric environment
• Itinerant ferromagnetism of a dipolar Fermi gas with Raman-induced spin-orbit coupling
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• Generation of vortex dipoles in superfluid Fermi gas in BCS limit
• SU(2) Ginzburg-Landau theory for degenerate Fermi gases with synthetic non-Abelian gauge fields