MAGNETOCONDUCTIVITY PROBE OF INHOMOGENEITY IN GAAS-GAALAS HETEROJUNCTIONS

被引：2

作者：

LAKRIMI, M

GRASSIE, ADC

HUTCHINGS, KM

BIRD, JP

HARRIS, JJ

FOXON, CT

机构：

[1] UNIV SUSSEX,DIV PHYS,BRIGHTON BN1 9RH,E SUSSEX,ENGLAND

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

[3] UNIV TSUKUBA,INST MAT SCI,TSUKUBA,IBARAKI 30031,JAPAN

[4] ROEDEAN SCH,BRIGHTON,ENGLAND

[5] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,IRC SEMICOND MAT,LONDON SW7 2AZ,ENGLAND

[6] UNIV NOTTINGHAM,DEPT PHYS,NOTTINGHAM NG7 2RD,ENGLAND

来源：

PHYSICA B | 1993年 / 184卷 / 1-4期

关键词：

D O I：

10.1016/0921-4526(93)90350-F

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have analysed the variation of the amplitude of the magnetoconductivity peaks of the 2DEG in GaAs/AlGaAs heterojunctions as a function of Landau level index number. We interpret our observations in terms of a scattering change as the magnetic field is varied and the size of the orbit dimensions relative to the scale of long-range potential fluctuations. Furthermore, the experimental values of the conductivity peaks are compared with theoretical predictions. Agreement is possible over a limited range of magnetic field and only when a low areal density of scatterers is used.

引用

页码：206 / 210

页数：5

共 17 条

[1] THE EFFECT OF STRONG LOCALIZATION ON THE MOBILITY OF ELECTRONS IN MODULATION-DOPED INVERTED STRUCTURES [J].