ELECTRON-BEAM COLLIMATION WITH A QUANTUM POINT CONTACT

被引：135

作者：

MOLENKAMP, LW

STARING, AAM

BEENAKKER, CWJ

EPPENGA, R

TIMMERING, CE

WILLIAMSON, JG

HARMANS, CJPM

FOXON, CT

机构：

[1] DELFT UNIV TECHNOL,2600 GA DELFT,NETHERLANDS

[2] PHILIPS RES LABS,REDHILL RH1 5HA,SURREY,ENGLAND

来源：

PHYSICAL REVIEW B | 1990年 / 41卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.41.1274

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Collimation of the electron beam injected by a point contact in a two-dimensional electron gas is demonstrated using a geometry with two opposite point contacts as injector and collector. The collimation is maintained over a distance of at least 4 m, and is destroyed by a small magnetic field. The inferred collimation factor scales linearly with the point-contact resistance, as predicted by the semiclassical theory. © 1990 The American Physical Society.

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页码：1274 / 1277

页数：4

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