Bose-Bose Mixtures with Synthetic Spin-Orbit Coupling in Optical Lattices

Abstract

We investigate the ground state properties of Bose-Bose mixtures with Rashba-type spin-orbit (SO) coupling in a square lattice. The system displays rich physics from the deep Mott-insulator (MI) all the way to the superfluid (SF) regime. In the deep MI regime, novel spin-ordered phases arise due to the effective Dzyaloshinskii-Moriya type super-exchange interactions. By employing the non-perturbative Bosonic Dynamical Mean-Field-Theory (BDMFT), we numerically study and establish the stability of these magnetic phases against increasing hopping amplitude. We show that as hopping is increased across the MI to SF transition, exotic superfluid phases with magnetic textures emerge. In particular, we identify a new spin-spiral magnetic texture with spatial period 3 in the superfluid close to the MI-SF transition.

5 pages, 3 figures

References in corpus (6)

• Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
• Tunable gauge potential for neutral and spinless particles in driven lattices
• A Bose-Einstein Condensate in a Uniform Light-induced Vector Potential
• Bose Hubbard Models with Synthetic Spin-Orbit Coupling: Mott Insulators, Spin Textures and Superfluidity
• Exotic quantum spin models in spin-orbit-coupled Mott insulators
• Correlated bosons on a lattice: Dynamical mean-field theory for Bose-Einstein condensed and normal phases

Cited by in corpus (11)

• Artificial $SU(3)$ Spin-Orbit Coupling and Exotic Mott Insulators
• Spin-orbit Coupling in Optical lattices
• Emergent Chiral Spin State in the Mott Phase of a Bosonic Kane-Mele-Hubbard Model
• Magnetic phase transitions of spin-1 ultracold bosons in a cubic optical lattice
• Rotation-symmetry-enforced coupling of spin and angular momentum for p-orbital bosons
• Quantum phases of spin-orbital-angular-momentum coupled bosonic gases in optical lattices
• Spin-Induced Orbital Frustration in a Hexagonal Optical Lattice
• Exotic Spin Phases in Two Dimensional Spin-orbit Coupled Models: Importance of Quantum Fluctuation Effects
• A distinguishable single excited-impurity in a Bose-Einstein condensate
• Thermal transitions of the modulated superfluid for spin-orbit coupled correlated bosons in an optical lattice
• Finite temperature mean-field theory with intrinsic non-hermitian structures for Bose gases in optical lattices