arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1008.0969cond-mat.mes-hallcond-mat.str-el
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分数量子霍尔态耗散电导模型

Model for Dissipative Conductance in Fractional Quantum Hall States

N. d'Ambrumenil, B. I. Halperin, R. H. Morf

摘要:

我们提出了一个分数量子霍尔制度的耗散输运模型。我们的模型考虑到隧穿通过鞍点的有效潜在的杂质所产生的激发。我们预测的温度范围内观察到的激活行为,并解释为什么这个范围几乎总是对应于整数量子霍尔和分数量子霍尔系统的温度的一个因素左右。我们确定的比率的间隙中观察到的激活的行为和拐点的温度在阿克里先乌斯图作为一个重要的诊断确定隧道的重要性,在实际样品。

英文摘要:

We present a model of dissipative transport in the fractional quantum Hall regime. Our model takes account of tunneling through saddle points in the effective potential for excitations created by impurities. We predict the temperature range over which activated behavior is observed and explain why this range nearly always corresponds to around a factor two in temperature in both integer quantum Hall and fractional quantum Hall systems. We identify the ratio of the gap observed in the activated behavior and the temperature of the inflection point in the Arrhenius plot as an important diagnostic for determining the importance of tunneling in real samples.

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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