BCS pairing state of a Dilute Bose Gas with Spin-Orbit Coupling
arXiv:1609.09691 · doi:10.1103/PhysRevA.96.013609
Abstract
We study a two-component Bose gas with a symmetric spin-orbit coupling, and find that two atoms can form a bound state with any intra- or inter-species scattering length. Consequently, in the dilute limit, the Bardeen-Cooper-Shrieffer (BCS) pairing state of bosons can be formed with weakly-attractive inter-species and repulsive intra-species interactions. The quasiparticle excitation energies are anisotropic due to spin-orbit coupling. This BCS paring state is energetically favored over Bose-Einstein condensation (BEC) of atoms at low densities. As the density increases, there is a first-order transition from the BCS to BEC states.
arXiv comment6 pages, 3 figures, a few corrections and changes
References in corpus (44)
- Topological Insulators
- Topological insulators and superconductors
- Spintronics: Fundamentals and applications
- Many-Body Physics with Ultracold Gases
- Quantum Spin Hall Effect
- Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
- A spin-orbit coupled Bose-Einstein condensate
- Artificial gauge potentials for neutral atoms
- Theory of ultracold Fermi gases
- Light-induced gauge fields for ultracold atoms
- Spin-orbit coupling in quantum gases
- Spin-Orbit Coupled Degenerate Fermi Gases
- Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
- Colloquium: Majorana Fermions in nuclear, particle and solid-state physics
- Realization of Two-Dimensional Spin-orbit Coupling for Bose-Einstein Condensates
- Degenerate Quantum Gases with Spin-Orbit Coupling
- Spin-Orbit Coupled Spinor Bose-Einstein Condensates
- Atom--Molecule Coherence in a Bose-Einstein Condensate
- Collective Dipole Oscillation of a Spin-Orbit Coupled Bose-Einstein Condensate
- Experimental realization of a two-dimensional synthetic spin-orbit coupling in ultracold Fermi gases
- Quantum tri-criticality and phase transitions in spin-orbit coupled Bose-Einstein condensates
- Spin-orbit coupled weakly interacting Bose-Einstein condensates in harmonic traps
- Trapped two-dimensional condensates with synthetic spin-orbit coupling
- Unconventional Bose-Einstein condensations from spin-orbit coupling
- Mean-field Dynamics of Spin-Orbit Coupled Bose-Einstein Condensates
- Formation of Quantum-Degenerate Sodium Molecules
- Synthetic 3D Spin-Orbit Coupling
- Stable Solitons in Three Dimensional Free Space: Self-Trapped Bose-Einstein Condensates with Spin-Orbit Coupling
- Unconventional states of bosons with synthetic spin-orbit coupling
- How does a synthetic non-Abelian gauge field influence the bound states of two spin-$\half$ fermions?
- Ultracold Molecule Production Via a Resonant Oscillating Magnetic Field
- Superfluid transitions in bosonic atom-molecule mixtures near Feshbach resonance
- Quantum marking and quantum erasure for neutral kaons
- Fate of a Bose-Einstein Condensate in the Presence of Spin-Orbit Coupling
- 2D and 3D topological insulators with isotropic and parity-breaking Landau levels
- Enhancement of condensate depletion due to spin-orbit coupling
- Modified Bethe-Peierls boundary condition for ultracold atoms with Spin-Orbit coupling
- A strongly interacting Bose gas: Nozières and Schmitt-Rink theory and beyond
- Ultracold collision in the presence of synthetic spin-orbit coupling
- Pairing Instability and Mechanical Collapse of a Bose Gas with an Attractive Interaction
- Multicriticality, Metastability, and Roton Feature in Bose-Einstein Condensates with Three-Dimensional Spin-Orbit Coupling
- Phase diagram of a Bose gas near a wide Feshbach resonance
- Molecular Bose-Einstein condensation in a Bose gas with a wide Feshbach resonance at finite temperatures
- Rashbon condensation in a Bose gas with Rashba spin-orbit coupling
Cited by in corpus (6)
- Three-boson spectrum in the presence of 1D spin-orbit coupling: Efimov's generalized radial scaling law
- Spin-Orbit Coupling Induced Resonance in an Ultracold Bose Gas
- Energetics and structural properties of two- and three-boson systems in the presence of 1D spin-orbit coupling
- Critical temperature of pair condensation in a dilute Bose gas with spin-orbit coupling
- Bardeen-Cooper-Schrieffer--type pairing in a spin- Bose gas with spin-orbit coupling
- Bound-State Band Reconstruction and Resonance in Spin-1/2 Bose Gas with 1D Spin-Orbit Coupling