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arXiv 1009.0237cond-mat.mes-hallcond-mat.str-el
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第二朗道能级中的非常规奇分母分数量子霍尔态

Nonconventional odd denominator fractional quantum Hall states in the second Landau level

A. Kumar, M. J. Manfra, G. A. Csáthy, L. N. Pfeiffer, K. W. West

摘要:

本文报道在朗道能级填充因子为$ν=2+6/13$的二维电子气的第二朗道能级中观察到一个新的分数量子霍尔态。我们发现,非相互作用复合费米子模型可以解释2+1/3和2+2/3态的能隙大小。然而,同样的模型不能解释2+2/5态和新观察到的2+6/13态的能隙,这表明这两个态是外来起源的。然而,较弱的2+2/5和2+6/13状态偏离显着,表明这些状态是外来的起源。

英文摘要:

We report the observation of a new fractional quantum Hall state in the second Landau level of a two-dimensional electron gas at the Landau level filling factor $ν=2+6/13$. We find that the model of noninteracting composite fermions can explain the magnitude of gaps of the prominent 2+1/3 and 2+2/3 states. The same model fails, however, to account for the gaps of the 2+2/5 and the newly observed 2+6/13 states suggesting that these two states are of exotic origin.omposite fermion model. However, the weaker 2+2/5 and 2+6/13 states deviate significantly suggesting that these states are of exotic origin.

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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