Superfluidity and magnetism in multicomponent ultracold fermions
Superconductivity
2009-11-13 v1 Strongly Correlated Electrons
Abstract
We study the interplay between superfluidity and magnetism in a multicomponent gas of ultracold fermions. Ward-Takahashi identities constrain possible mean-field states describing order parameters for both pairing and magnetization. The structure of global phase diagrams arises from competition among these states as functions of anisotropies in chemical potential, density, or interactions. They exhibit first and second order phase transition as well as multicritical points, metastability regions, and phase separation. We comment on experimental signatures in ultracold atoms.
Cite
@article{arxiv.0705.0347,
title = {Superfluidity and magnetism in multicomponent ultracold fermions},
author = {R. W. Cherng and Gil Refael and Eugene Demler},
journal= {arXiv preprint arXiv:0705.0347},
year = {2009}
}