Two-parameter flow of σxx(ω)-σxy(ω) for the graphene quantum Hall system in the ac regime
Two-parameter flow of σxx(ω)-σxy(ω) for the graphene quantum Hall system in the ac regime
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交流态石墨烯量子霍尔系统的 σxx(ω)-σxy(ω) 的二参数流
DOI：
10.1103/physrevb.85.165445
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Takahiro Morimoto
中科院分区：
文献类型：
--
作者：
Haze;K.;et al.;Takahiro Morimoto
对石墨烯量子霍尔效应系统在有限频率范围内的流图进行了数值研究。交流流图显示出与直流流图性质相似的行为，因此由频率决定的动态长度尺度为重整化流动提供了一个相应的截止点。然后用动力学标度理论讨论了双参数流动。我们还讨论了呈现由原始频率驱动的经典流动的更大区域。
The flow diagram ofin a finite-frequency () regime is numerically studied for a graphene quantum Hall effect system. The ac flow diagrams turn out to show qualitatively similar behavior to that of the dc flow diagrams, whereby the dynamical length scale determined by the frequency poses a relevant cutoff for the renormalization flow. The two-parameter flow then is discussed in terms of the dynamical scaling theory. We also discuss the larger-regime that exhibits classical flows driven by the raw frequency.