TRANSMISSION COEFFICIENTS AND HALL RESISTANCE IN A SMALL CROSS-SHAPED SEMICONDUCTOR JUNCTION

被引：2

作者：

GREENE, SK

PEPPER, M

WHARAM, DA

PEACOCK, DC

RITCHIE, DA

FROST, JEF

HASKO, DG

AHMED, H

JONES, GAC

机构：

[1] GEC MARCONI LTD,HIRST RES CTR,E LANE,WEMBLEY HA7 9PP,MIDDX,ENGLAND

[2] UNIV CAMBRIDGE,CAVENDISH LAB,CAMBRIDGE CB3 0HE,ENGLAND

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1991年 / 3卷 / 12期

关键词：

D O I：

10.1088/0953-8984/3/12/028

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A method is described that measures both the transmission coefficients and the Hall resistance for a narrow cross. Buttiker's formula relating these quantities has been verified. The amount of collimation is estimated from the magnetoresistance and shown to be small, with congruent-to 5% more electrons travelling straight on at the cross in zero magnetic field compared with a magnetic field of 0.1 T. This illustrates that the reason for the quenching of the Hall effect here is a scrambling mechanism rather than the collimation mechanism.

引用

页码：1961 / 1965

页数：5