Phase separation in a mixture of trapped charged Bose-Einstein condensates

Abstract

We study the phase separation configurations and their rotational properties for a mixture of two interacting charged Bose-Einstein condensates subject to a magnetic field trapped in disc and Corbino geometries. We calculate the ground state energies of azimuthal and radial phase separation configurations using the Gross-Pitaevskii and the Thomas-Fermi approximations. We show that the results for experimentally relevant system parameters from both approaches are in good agreement. The immiscible mixture in both geometries with equal intracomponent interactions favors the azimuthal phase separation for all intercomponent interactions. Only an imbalance in the intracomponent interactions can result in a transition to the radial phase separation, for which the transition becomes sensitive to the shape of the trap. We present phase diagrams as a function of the inter and intracomponent interactions. While the radial phase separation is widely favoured in disc geometry, the azimuthal phase separation is favoured for narrower Corbino geometries. We explore the rotational properties of the spatially separated condensates under the magnetic field, studying their angular momenta and velocity fields. The quantization of circulation breaks down for the azimuthal phase separation. In this case, the bulk region of the condensate continues to display superfluid flow behavior whereas the velocity field shows a rigid body behavior along the phase boundaries.

arXiv comment9 pages and 7 figures

References in corpus (53)

• Many-Body Physics with Ultracold Gases
• Synthetic magnetic fields for ultracold neutral atoms
• The dynamics of component separation in a binary mixture of Bose-Einstein condensates
• Phase separation of Bose-Einstein condensates
• Superflow in a toroidal Bose-Einstein condensate: an atom circuit with a tunable weak link
• A Bose-Einstein Condensate in a Uniform Light-induced Vector Potential
• Hysteresis in a quantized, superfluid atomtronic circuit
• Binary Bose-Einstein Condensate Mixtures in Weakly and Strongly Segregated Phases
• Experimental realization of Josephson junctions for an Atom SQUID
• Quantised supercurrent decay in an annular Bose-Einstein condensate
• Dual-Species Bose-Einstein Condensate of ${}^{87}$Rb and ${}^{133}$Cs
• Structure of binary Bose-Einstein condensates
• XMDS2: Fast, scalable simulation of coupled stochastic partial differential equations
• Persistent currents in spinor condensates
• Bose-Einstein condensates with vortices in rotating traps
• Non-Equilibrium Dynamics and Superfluid Ring Excitations in Binary Bose-Einstein Condensates
• Controlling phase separation of binary Bose-Einstein condensates via mixed-spin-channel Feshbach resonance
• Hartree-Fock treatment of the two-component Bose-Einstein condensate
• Phase Separation and Dynamics of two-component Bose-Einstein condensates
• Tunable dual-species Bose-Einstein condensates of ${}^{39}$K and ${}^{87}$Rb
• Interface Tension of Bose-Einstein Condensates
• Rabi flopping induces spatial demixing dynamics
• A double species ${}^{23}$Na and ${}^{87}$Rb Bose-Einstein condensate with tunable miscibility via an interspecies Feshbach resonance
• Boundary of two mixed Bose-Einstein condensates
• Controlling phase separation of a two-component Bose-Einstein condensate by confinement
• Crossover between Kelvin-Helmholtz and counter-superflow instabilities in two-component Bose-Einstein condensates
• Probing the Interface of a Phase-Separated State in a Repulsive Bose-Fermi Mixture
• Probing the circulation of ring-shaped Bose-Einstein condensates
• Mixtures of Bose Gases Confined in a Ring Potential
• Countersuperflow instability in miscible two-component Bose-Einstein condensates
• Static interfacial properties of Bose-Einstein condensate mixtures
• Thermal suppression of phase separation in condensate mixtures
• Feshbach spectroscopy and dual-species Bose-Einstein condensation of ${}^{23}\mathrm{Na}-$${}^{39}\mathrm{K}$ mixtures
• Symmetric-Asymmetric transition in mixtures of Bose-Einstein condensates
• Dual-species Bose-Einstein condensate of 41K and 87Rb in a hybrid trap
• Persistent currents in two-component condensates in a toroidal trap
• Persistent currents in Bose gases confined in annular traps
• The mixing-demixing phase diagram of ultracold heteronuclear mixtures in a ring trimer
• Excitations of a trapped two component Bose Einstein Condensate
• Optical lattice influenced geometry of quasi-2D binary condensates and quasiparticle spectra
• Fluctuation driven topological transition of binary condensates in optical lattices
• Dynamics of phase separation in two species Bose-Einstein condensates with vortices
• Symmetry breaking in binary Bose-Einstein condensates in the presence of an inhomogeneous artificial gauge field
• Immiscible and miscible states in binary condensates in the ring geometry
• Connection between rotation and miscibility in a two-component Bose-Einstein condensate
• Vortex lattices in dipolar two-component Bose-Einstein condensates
• Suppression of relative flow by multiple domains in two-component Bose-Einstein condensates
• Emergence of Classical Rotation in Superfluid Bose-Einstein Condensates
• Topological defects in mixtures of superconducting condensates with different charges
• Persistent currents in coherently coupled Bose-Einstein condensates in a ring trap
• Pairing of Fermions with Unequal Effective Charges in an Artificial Magnetic Field
• Fulde-Ferrell states in unequally charged Fermi gases
• Mixture of two unequally charged superfluids in a magnetic field