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arXiv 0905.1146cond-mat.quant-gascond-mat.supr-con
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光晶格中冷原子的$F$波配对

$F$-wave pairing of cold atoms in optical lattices

Wei-Cheng Lee, Congjun Wu, S. Das Sarma

摘要:

冷原子物理学的巨大发展为研究固态系统中不容易获得的新物质态提供了一个全新的机会。本文提出在二维蜂窝光晶格的$p_{x,y}$ -轨道带中实现无自旋费米子的$f$ -波配对超流性。非平凡的轨道能带结构,而不是强关联效应引起的非常规配对的节线的$f$波对称。在束缚简谐势阱中,零能量Andreev束缚态出现在具有六重对称性的圆形边界附近。这种新的配对状态的实验实现和检测是可行的。

英文摘要:

The tremendous development of cold atom physics has opened up a whole new opportunity to study novel states of matter which are not easily accessible in solid state systems. Here we propose to realize the $f$-wave pairing superfluidity of spinless fermions in the $p_{x,y}$-orbital bands of the two dimensional honeycomb optical lattices. The non-trivial orbital band structure rather than strong correlation effects gives rise to the unconventional pairing with the nodal lines of the $f$-wave symmetry. With a confining harmonic trap, zero energy Andreev bound states appear around the circular boundary with a six-fold symmetry. The experimental realization and detection of this novel pairing state are feasible.

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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