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arXiv 1012.2930cond-mat.str-el
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高温分数量子霍尔态

High temperature fractional quantum Hall states

Evelyn Tang, Jia-Wei Mei, Xiao-Gang Wen

摘要:

我们发现,一个适当的几何挫折,铁磁性和自旋轨道相互作用的组合可以产生一个大的带隙和非零陈数的近平带。平带的部分填充可以在高温(甚至室温)下产生分数量子霍尔态。虽然具有合适参数的候选材料的识别仍然是开放的,但我们的工作表明了探索和合成的有趣方向。

英文摘要:

We show that a suitable combination of geometric frustration, ferromagnetism and spin-orbit interactions can give rise to nearly flat bands with a large bandgap and non-zero Chern number. Partial filling of the flat band can give rise to fractional quantum Hall states at high temperatures (maybe even room temperature). While the identification of material candidates with suitable parameters remains open, our work indicates intriguing directions for exploration and synthesis.

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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