The Pairing of Spin-orbit Coupled Fermi Gas in Optical Lattice

Abstract

We investigate Rashba spin-orbit coupled Fermi gases in square optical lattice by using the determinant quantum Monte Carlo (DQMC) simulations which is free of the sign-problem. We show that the Berezinskii-Kosterlitz-Thoules phase transition temperature is firstly enhanced and then suppressed by spin-orbit coupling in the strong attraction region. In the intermediate attraction region, spin-orbit coupling always suppresses the transition temperature. We also show that the spin susceptibility becomes anisotropic and retains finite values at zero temperature.

10 pages, 9 figures

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Cited by in corpus (12)

• Majorana Positivity and the Fermion sign problem of Quantum Monte Carlo Simulations
• The ALF (Algorithms for Lattice Fermions) project release 1.0. Documentation for the auxiliary field quantum Monte Carlo code
• Ultracold atoms in a square lattice with spin-orbit coupling: Charge order, superfluidity, and topological signatures
• Rashba spin-orbit coupling, strong interactions, and the BCS-BEC crossover in the ground state of the two-dimensional Fermi Gas
• Semigroup approach to the sign problem in quantum Monte Carlo simulations
• Spin-orbit-coupled atomic Fermi gases in two-dimensional optical lattices in the presence of a Zeeman field
• Nature of the mixed-parity pairing of attractive fermions with spin-orbit coupling in optical lattice
• Spin-susceptibility of spin-orbit coupled Fermi superfluids
• The ALF (Algorithms for Lattice Fermions) project release 2.4. Documentation for the auxiliary-field quantum Monte Carlo code
• Weyl semimetallic, Néel, spiral, and vortex states in the Rashba-Hubbard model
• Skyrmion-like textures in superconductors with competing order
• Spin-orbit coupled periodic Anderson model: Kondo-Dirac semimetal and orbital-selective antiferromagnetic semimetal