



@article {1295,
	title = {Spin-orbit-coupled topological Fulde-Ferrell states of fermions in a  harmonic trap
},
	journal = {Physical Review A},
	volume = {90},
	year = {2014},
	month = {2014/11/7},
	abstract = {  Motivated by recent experimental breakthroughs in generating spin-orbit
coupling in ultracold Fermi gases using Raman laser beams, we present a
systematic study of spin-orbit-coupled Fermi gases confined in a
quasi-one-dimensional trap in the presence of an in-plane Zeeman field (which
can be realized using a finite two-photon Raman detuning). We find that a
topological Fulde-Ferrell state will emerge, featuring finite-momentum Cooper
pairing and zero-energy Majorana excitations localized near the edge of the
trap based on the self-consistent Bogoliubov-de Genes (BdG) equations. We find
analytically the wavefunctions of the Majorana modes. Finally using the
time-dependent BdG we show how the finite-momentum pairing field manifests
itself in the expansion dynamics of the atomic cloud.
},
	doi = {10.1103/PhysRevA.90.053606},
	url = {http://arxiv.org/abs/1404.6211v1},
	author = {Lei Jiang and Eite Tiesinga and Xia-Ji Liu and Hui Hu and Han Pu}
}
