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arXiv 1312.2292cond-mat.quant-gas
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光晶格中自旋轨道耦合费米气体的配对

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

Ho-Kin Tang, Xiaosen Yang, Jinhua Sun, Hai-Qing Lin

摘要:

本文采用不涉及符号问题的行列式量子蒙特卡罗(DQMC)方法研究了正方形光晶格中Rashba自旋轨道耦合费米气体。结果表明,在强吸引区,自旋轨道耦合作用先增强后抑制Berezinskiii-Kosterlitz-Schelles相变温度.在中间吸引区,自旋轨道耦合总是抑制转变温度。我们还表明,自旋磁化率成为各向异性,并保持在零温度的有限值。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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