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arXiv 0710.5484cond-mat.supr-concond-mat.str-elquant-ph
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光晶格中极化超冷费米子的奇异超流性研究

Exploring Exotic Superfluidity of Polarized Ultracold Fermions in Optical Lattices

Y. Chen, Z. D. Wang, F. C. Zhang, C. S. Ting

摘要:

通过求解Bogoliubov-de Gennes方程,从理论上研究了二维光晶格中简谐囚禁极化超冷费米子原子的超流性.发现在低密度下,配对振幅沿径向振荡,而在高密度下,配对振幅沿角向振荡。前者与已有的实验结果一致,后者是一个新预测的Fulde-Ferrell-Larkin-Ovchinnikov(FFLO)态,可以在实验中得到验证。

英文摘要:

We explore theoretically the novel superfluidity of harmonically-trapped polarized ultracold fermionic atoms in a two-dimensional (2D) optical lattice by solving the Bogoliubov-de Gennes equations. The pairing amplitude is found to oscillate along the radial direction at low particle density and along the angular direction at high density. The former is consistent with the existing experiments and the latter is a newly predicted Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, which can be tested in experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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