Sub-periods and apparent pairing in integer quantum Hall interferometers
Sub-periods and apparent pairing in integer quantum Hall interferometers
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DOI：
10.1209/0295-5075/126/67007
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发表时间：
2019-06-01
期刊：
影响因子：
1.8
通讯作者：
Rosenow, Bernd
中科院分区：
文献类型：
--
作者：
Friceri, Giovanni A.;Scherer, Daniel D.;Rosenow, Bernd
我们分析了整数量子Hall Fabry-Perot干涉仪中纵向电阻与磁场和栅电压的关系，考虑了最外干涉边缘模、内非干涉边缘模和体之间的相互作用.对于弱的体边缘耦合和足够强的边缘间相互作用，我们得出干涉仪工作在阿哈罗诺夫-玻姆制度下，通量周期性相对于通常的期望减半。即使在强体边缘耦合的制度，这种行为可以观察到作为一个亚周期的库仑主导的制度中的干涉信号。但是，我们没有找到证据证明通量减少期和电子配对之间存在联系。我们的结果可以描述一些最近的实验结果。版权所有（C）EPLA，2019
We analyse the magnetic field and gate voltage dependence of the longitudinal resistance in an integer quantum Hall Fabry-Perot interferometer, taking into account the interactions between an outermost interfering edge mode, an inner non-interfering edge mode and the bulk. For weak bulk-edge coupling and sufficiently strong inter-edge interaction, we obtain that the interferometer operates in the Aharonov-Bohm regime with a flux periodicity halved with respect to the usual expectation. Even in the regime of strong bulk-edge coupling, this behaviour can be observed as a sub-periodicity of the interference signal in the Coulomb-dominated regime. We do not find evidence for a connection between a reduced flux period and electron pairing, though. Our results can describe some recent experimental findings. Copyright (C) EPLA, 2019