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Superfluid Properties of a Spin-orbit Coupled Fermi Gas

Juan Yao, Shan–Shan Ding, Zhenhua Yu +1 more

WORLD SCIENTIFIC eBooksJul 25, 20180 citations

Probing Anisotropic Superfluidity in Atomic Fermi Gases with Rashba Spin-Orbit Coupling

Hui Hu, Lei Jiang, Xia-Ji Liu +1 more

Motivated by the prospect of realizing a Fermi gas with a synthetic non-Abelian gauge field, we investigate theoretically a strongly interacting Fermi gas in the presence of a Rashba spin-orbit coupling. As the twofold spin degeneracy is lifted by spin-orbit interaction, bound pairs with mixed singlet and triplet components emerge, leading to an anisotropic superfluid. We calculate the relevant physical quantities, such as the momentum distribution, the single-particle spectral function, and the spin structure factor, that characterize the system.Motivated by the prospect of realizing a Fermi gas with a synthetic non-Abelian gauge field, we investigate theoretically a strongly interacting Fermi gas in the presence of a Rashba spin-orbit coupling. As the twofold spin degeneracy is lifted by spin-orbit interaction, bound pairs with mixed singlet and triplet components emerge, leading to an anisotropic superfluid. We calculate the relevant physical quantities, such as the momentum distribution, the single-particle spectral function, and the spin structure factor, that characterize the system.

arXiv:1105.2488Physical Review LettersNov 4, 2011210 citations

Pairing Superfluidity in Spin-Orbit Coupled Ultracold Fermi Gases

Xingze Qiu, Wei Yi

WORLD SCIENTIFIC eBooksJul 25, 20180 citations

Vortex dipole precession in a Fermi superfluid with Rashba spin-orbit coupling

L. A. Toikka

We present a closed-form expression for the time dynamics of a balanced Fermi superfluid with s-wave pairing and Rashba spin-orbit (SO) coupling. Solving the associated self-consistency conditions for an initial number density given by a Gaussian and an initial gap containing a vortex dipole, we show that Rashba SO coupling results in precession of the vortex dipole. The integrated self-consistent gap decays as a function of time, characterising a "transient Fermi superfluid". Our analytic solution forms a starting point for studies of vortex dynamics -- in particular braiding of Majorana fermions -- in Fermi superfluids in the presence of spin population imbalance and two-dimensional SO coupling, which are both required to realize a topological atomic Fermi gas in experiments.We present a closed-form expression for the time dynamics of a balanced Fermi superfluid with s-wave pairing and Rashba spin-orbit (SO) coupling. Solving the associated self-consistency conditions for an initial number density given by a Gaussian and an initial gap containing a vortex dipole, we show that Rashba SO coupling results in precession of the vortex dipole. The integrated self-consistent gap decays as a function of time, characterising a "transient Fermi superfluid". Our analytic solution forms a starting point for studies of vortex dynamics -- in particular braiding of Majorana fermions -- in Fermi superfluids in the presence of spin population imbalance and two-dimensional SO coupling, which are both required to realize a topological atomic Fermi gas in experiments.

arXiv:1711.04970Nov 14, 20170 citations

Pairing superfluidity in spin-orbit coupled ultracold Fermi gases

Wei Yi, Wei Zhang, Xiaoling Cui

arXiv:1410.1595Science China Physics Mechanics and AstronomySep 30, 201436 citations

Probing Nonadiabatic Transistion Dynamics in 2d Topological Superfluid Fermi Gas with Spin Orbit Coupling

Ateuafack Mathurin Esouague, Lavoisier Wah, Jipdi Nana Michael +4 more

Jan 1, 20240 citations

Probing Fermi Superfluids with Spin-Orbit Coupling Via Spin-Spin Correlation Functions

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