具有自旋轨道耦合的冷原子费米气中的拓扑超流和FFLO超流

Topological superfluids and FFLO superfluids in spin-orbit coupled atomic Fermi gases

研究了具有自旋轨道耦合的冷原子费米气在外磁场作用下的物理性质.通过自洽求解Bogoliubove-de Gennes方程,发现了在不同磁场强度和粒子填充数下,体系分别存在拓扑超流态和Fulde-Ferrell-LarkinOvchinnikov超流态.当体系处于拓扑超流态时,存在零能Majorana费米子.

solving the It was investigated the properties of spin-orbit coupled atomic fermi gases under a Zeeman field. By Bogoliubove-de Gennes equation self-consistently, it was found that the system supported the topoi- ogical superfluid state and the Fulde-Ferrell-Larkin-Ovchinnikov superfluid state respectively when the system under the different strength of Zeeman field and filling factors. When the system turned into topological super- fluid state, a pair of zero-energy Majorana fermions were found.