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arXiv · 1312.2292

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

Ho-Kin Tang·Xiaosen Yang·Jinhua Sun·Hai-Qing Lin
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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.

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Ho-Kin Tang, Xiaosen Yang, Jinhua Sun, Hai-Qing Lin. 2013-12-09. The Pairing of Spin-orbit Coupled Fermi Gas in Optical Lattice. https://doi.org/10.1209/0295-5075%2F107%2F40003

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