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

页码：13353 / 13356

页数：4

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