Continuous phase shift in the forced interference of edge states in the quantum Hall regime

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• 作者：Shin ; Mincheol
• 关键词：72.20.My ; 73.20.Dx ; 73.40.Hm ; 72.15.Gd ; E. Mesoscopic system ; C. Edge state ; E. Ballistic transport ; A. Quantum wire
• 刊名：Solid State Communications
• 出版年：2002
• 出版时间：June, 2002
• 年：2002
• 卷：122
• 期：9
• 页码：489-492
• 全文大小：162 K

文摘

The edge states in the quantum Hall regime are forced to interfere on one side of an Aharonov–Bohm ring by a potential barrier. The net effect of the interference caused by the potential barrier is found to change the electron's phase by Δ in the final transmittance, and the phase shift Δ is continuous as the barrier potential is continuously changed. This result is in sharp contrast with the earlier study that Δ=2nπ, where n is an integer, regardless of the barrier potential.