Shifting a quantum wire through a disordered crystal:: Observation of conductance fluctuations in real space

被引：12
|
作者：
Heinzel, T [1 ]
Salis, G
Held, R
Lüscher, S
Ensslin, K
Wegscheider, W
Bichler, M
机构：
[1] Swiss Fed Inst Technol, Solid State Phys Lab, CH-8093 Zurich, Switzerland
[2] Tech Univ Munich, Walter Schottky Inst, D-85748 Garching, Germany
[3] Univ Regensburg, Inst Angew & Expt Phys, D-93040 Regensburg, Germany
来源：
PHYSICAL REVIEW B | 2000年 / 61卷 / 20期
关键词：
D O I：
10.1103/PhysRevB.61.R13353
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A quantum wire is spatially displaced by suitable electric fields with respect to the scattering potentials inside a semiconductor crystal. As a function of the wire position, the low-temperature conductance shows reproducible fluctuations. Their characteristic temperature scale is a few hundred millikelvin, indicating a phase-coherent effect. One fluctuation is attributed to a single bump in the scattering potential entering or leaving the wire.
引用
收藏
页码：13353 / 13356
页数：4
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