Aharonov–Bohm-like oscillations in Fabry–Perot interferometers

Aharonov–Bohm-like oscillations in Fabry–Perot interferometers
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法布里-珀罗干涉仪中的类阿哈罗诺夫-玻姆振荡

DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
K. Baldwin
K. Baldwin
中科院分区：
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文献类型：
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作者：
H. Choi;P. Jiang;M. Godfrey;W. Kang;S. Simon;L. Pfeiffer;K. West;K. Baldwin

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在量子霍尔区对法布里-珀罗干涉仪的实验研究揭示了类阿哈罗诺夫-玻姆（ABL）振荡。与Aharonov-Bohm效应的周期为一个通量量子Φ0不同，ABL振荡的通量周期为Φ0/f，其中f是缩窄中完全填充的朗道能级的积分值。ABL振荡的检测仅限于νc= 1,2,4,6，…整数量子霍尔平台的低磁场侧。在量子霍尔干涉仪的库仑主导模型中，这些振荡可以被理解为分别从体态和边缘态通过干涉仪中心的正向隧穿和反向散射。
An experimental study of a Fabry–Perot interferometer in the quantum Hall regime reveals Aharonov–Bohm-like (ABL) oscillations. Unlike the Aharonov–Bohm effect, which has a period of one flux quantum, Φ0, ABL oscillations possess a flux period of Φ0/f, where f is the integral value of fully filled Landau levels in the constrictions. The detection of ABL oscillations is limited to the low magnetic field side of the νc=1, 2, 4, 6, … , integer quantum Hall plateaus. These oscillations can be understood within the Coulomb-dominated model of quantum Hall interferometers as forward tunneling and backscattering, respectively, through the center of the interferometer from the bulk and the edge states.