Aharonov-Bohm oscillation amplitude in small ballistic interferometers

被引：0
|
作者：
V. A. Tkachenko
Z. D. Kvon
D. V. Sheglov
A. V. Latyshev
A. I. Toropov
O. A. Tkachenko
D. G. Baksheyev
A. L. Aseev
机构：
[1] Russian Academy of Sciences,Institute of Semiconductor Physics, Siberian Division
[2] Novosibirsk State University,undefined
来源：
Journal of Experimental and Theoretical Physics Letters | 2004年 / 79卷
关键词：
73.23.Ad; 73.20.−r; 73.50.−h;
D O I：
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中图分类号：
学科分类号：
摘要：
Small-radius (110 nm) ring interferometers were fabricated by the local anodic oxidation of AlGaAs/GaAs heterostructures containing 2D electron gas. Measurements and modeling show that a small ring asymmetry, which is detected by an atomic force microscope, leads to a small amplitude of Aharonov-Bohm oscillations, while a stronger asymmetry completely suppresses these oscillations.
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页码：136 / 140
页数：4
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