FFLO Superfluids in 2D Spin-Orbit Coupled Fermi Gases

被引：0

作者：

Zhen Zheng

Ming Gong

Yichao Zhang

Xubo Zou

Chuanwei Zhang

Guangcan Guo

机构：

[1] Key Laboratory of Quantum Information,Department of Physics and Centre for Quantum Coherence

[2] University of Science and Technology of China,Department of Physics

[3] The Chinese University of Hong Kong,undefined

[4] Shatin,undefined

[5] N.T.,undefined

[6] The University of Texas at Dallas,undefined

[7] Synergetic Innovation Center of Quantum Information and Quantum Physics,undefined

[8] USTC,undefined

来源：

Scientific Reports | / 4卷

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摘要：

We show that the combination of spin-orbit coupling and in-plane Zeeman field in a two-dimensional degenerate Fermi gas can lead to a larger parameter region for Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phases than that using spin-imbalanced Fermi gases. The resulting FFLO superfluids are also more stable due to the enhanced energy difference between FFLO and conventional Bardeen-Cooper-Schrieffer (BCS) excited states. We clarify the crucial role of the symmetry of Fermi surface on the formation of finite momentum pairing. The phase diagram for FFLO superfluids is obtained in the BCS-BEC crossover region and possible experimental observations of FFLO phases are discussed.

引用

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