文章基本信息

标题：Importance of Backscattering Effects in Ballistic Quantum Transport in Mesoscopic Ring Structures
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作者：Shin, Min-Cheol ; Park, Kyoung-Wan ; Lee, Seong-Jae 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：1997
卷号：18
期号：4
页码：301-301
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：We have found that in the ballistic electron transport in a ring structure, the junction-backscattering contribution is critical for all the major features of the Aharonov-Bohm-type interference patterns. In particular, by considering the backscattering effect, we present new and clear interpretation about the physical origin of the secondary minima in the electrostatic Aharonov-Bohm effect and that of the h/2e oscillations when both the electric and magnetic potentials are present. We have devised a convenient scheme of expanding the conductance by the junction backscattering amplitude, which enables us to determine most important electron paths among infinitely many paths and to gain insight about their contributions to the interference patterns. Based on the scheme, we have identified various interesting interference phenomena in the ballistic ring structure and found that the backscattering effect plays a critical role in all of them.