Author(s): Zengming Meng, Lianghui Huang, Peng Peng, Donghao Li, Liangchao Chen, Yong Xu, Chuanwei Zhang, Pengjun Wang, and Jing Zhang
The topological band gap in a Fermi gas is controlled by tuning the polarization of Raman lasers that create a perpendicular Zeeman field, leading to a band gap opening.

[Phys. Rev. Lett. 117, 235304] Published Fri Dec 02, 2016