稀薄偶极费米气体的铁磁向列基态
量子气体
2009-11-18 v4 强关联电子
摘要
研究表明，具有（长程）偶极和短程各向同性相互作用的均匀双组分费米气体，在偶极和短程耦合常数的适当取值下，存在一个{\em 铁磁向列}相。铁磁向列相的特征是具有非零磁化强度和长程取向单轴序。自旋向上（向下）分量的费米面沿磁化方向被拉长（压缩）。
引用
@article{arxiv.0907.1345,
title = {Ferro-Nematic ground state of the dilute dipolar Fermi gas},
author = {Benjamin M. Fregoso and Eduardo Fradkin},
journal= {arXiv preprint arXiv:0907.1345},
year = {2009}
}
备注
4 pages, 4 figures. v2 contains a significant revision of version v1 which contained some incorrect results. v2 includes a detail discussion of the phase diagram (and of the degree of polarization of the ferro-nematic phase) including an estimate of the critical couplings. It supersedes the results presented in v1; Version v4 has minor changes