A Cold Atomic Fermi Gas with a Spatially Modulated Interaction
Superconductivity
2007-05-23 v2 Other Condensed Matter
Abstract
We study an ultra-cold atomic Fermi Gas with the atom-atom interaction modulated periodically in space. A novel ground state with cooper pairs occupying non-zero center of mass momenta is found. Such a state is closely related to the state proposed by Fulde, Ferrell, Larkin, and Ovchinnikov(FFLO). The resultant single particle excitations with momenta along the direction of the modulation shows multiple-gap structures. Such a system can be realized in experiment with a spatially modulated Feshbach resonance. Experimental signatures of such a state are discussed.
Cite
@article{arxiv.cond-mat/0610844,
title = {A Cold Atomic Fermi Gas with a Spatially Modulated Interaction},
author = {Hao Fu and Alberto G. Rojo},
journal= {arXiv preprint arXiv:cond-mat/0610844},
year = {2007}
}
Comments
11 pages, 3 figures, replaced with eps figures