A long-lived spin-orbit-coupled dipolar Fermi gas

Yi Li, Congjun Wu

Dmitrii L. Maslov

Nathaniel Burdick, Yijun Tang, Benjamin Lev

Observing the effects of quantum phenomena requires relatively long state lifetimes. In a new experiment, ultracold dysprosium atoms are used to demonstrate that spin-orbit coupling persists for 10 to 100 times longer than in other atoms.

Xue-Jing Feng, Lan Yin

We study the ferromagnetic transition of a two-component homogeneous dipolar Fermi gas with 1D spin–orbit coupling (SOC) at finite temperature. The ferromagnetic transition temperature is obtained as functions of dipolar constant λ d, spin–orbit coupling constant λ SOC and contact interaction constant λ s. It increases monotonically with these three parameters. In the ferromagnetic phase, the Fermi surfaces of different components can be deformed differently. The phase diagrams at finite temperature are obtained.

Daniel Maldonado-Mundo, Lianyi He, Patrik Öhberg +1 more

Xue-Jing Feng, Xing-Dong Zhao, Lu Qin +5 more

We elucidate the itinerant ferromagnetism of a dipolar Fermi gas with a Raman-induced spin-orbit coupling by investigating the exotic phase diagrams. It is revealed that the dipolar interaction along with spin-orbit coupling can corroborate the formation of ferromagnetism and that the Raman coupling adversely eliminates the tendency to this ferromagnetism transition, which greatly transcends the general understanding of this subject with contact interaction only. We explore the ground states through the density and spin-flip distribution in momentum space. We calculate the transition temperatures well within the reach of an experimental system when altering the dipolar and spin-orbit-coupling strength, which paves a way to the further experimental realization.