INTERSUBBAND SCATTERING IN GAAS/ALXGA1-XAS HETEROSTRUCTURES

被引：3

作者：

DELANGE, W

BLOM, FAP

VANHALL, PJ

KOENRAAD, PM

WOLTER, JH

机构：

[1] Department of Physics, Eindhoven University of Technology

来源：

PHYSICA B | 1993年 / 184卷 / 1-4期

关键词：

D O I：

10.1016/0921-4526(93)90352-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present measurements of both transport and quantum mobility in a GaAs/AlGaAs heterostructure as a function of the electron concentration, in a range where the second subband becomes occupied, From these measurements we observe a drop in the mobilities at the onset of the second subband. The second subband influences the electrical transport properties by intersubband scattering and screening effects. The individual contribution of these effects determines the height and sign of the step in the mobility and depends on the spatial overlap between the wavefunctions of both subbands, as we show with theoretical model calculations.

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页码：216 / 220

页数：5

相关论文

共 11 条

[1] SINGLE-PARTICLE RELAXATION-TIME VERSUS SCATTERING TIME IN AN IMPURE ELECTRON-GAS [J].

DASSARMA, S ;

STERN, F .

PHYSICAL REVIEW B, 1985, 32 (12) :8442-8444

[2] PERSISTENT PHOTOCONDUCTIVITY AND 2-BAND EFFECTS IN GAAS/ALXGA1-XAS HETEROJUNCTIONS [J].

FLETCHER, R ;

ZAREMBA, E ;

DIORIO, M ;

FOXON, CT ;

HARRIS, JJ .

PHYSICAL REVIEW B, 1990, 41 (15) :10649-10666

[3] QUANTUM AND CLASSICAL MOBILITY DETERMINATION OF THE DOMINANT SCATTERING MECHANISM IN THE TWO-DIMENSIONAL ELECTRON-GAS OF AN ALGAAS/GAAS HETEROJUNCTION [J].

HARRANG, JP ;

HIGGINS, RJ ;

GOODALL, RK ;

JAY, PR ;

LAVIRON, M ;

DELESCLUSE, P .

PHYSICAL REVIEW B, 1985, 32 (12) :8126-8135

[4] HYDROSTATIC-PRESSURE CONTROL OF THE CARRIER DENSITY IN GAAS GAALAS HETEROSTRUCTURES - ROLE OF THE METASTABLE DEEP LEVELS [J].

MERCY, JM ;

BOUSQUET, C ;

ROBERT, JL ;

RAYMOND, A ;

GREGORIS, G ;

BEERENS, J ;

PORTAL, JC ;

FRIJLINK, PM ;

DELESCLUSE, P ;

CHEVRIER, J ;

LINH, NT .

SURFACE SCIENCE, 1984, 142 (1-3) :298-305

[5] PROPERTIES OF ELECTRONS IN SEMICONDUCTOR INVERSION LAYERS WITH MANY OCCUPIED ELECTRIC SUBBANDS .1. SCREENING AND IMPURITY SCATTERING [J].

SIGGIA, ED ;

KWOK, PC .

PHYSICAL REVIEW B, 1970, 2 (04) :1024-&

[6] 2-SUBBAND TRANSPORT - A CONUNDRUM IN SCATTERING [J].

SMITH, TP ;

FANG, FF ;

MEIRAV, U ;

HEIBLUM, M .

PHYSICAL REVIEW B, 1988, 38 (17) :12744-12747

[7] UPPER-SUBBAND TRANSPORT IN GAAS HETEROSTRUCTURES [J].

SMITH, TP ;

FANG, FF .

PHYSICAL REVIEW B, 1988, 37 (08) :4303-4305

[8] OBSERVATION OF INTERSUBBAND SCATTERING IN A TWO-DIMENSIONAL ELECTRON-SYSTEM [J].

STORMER, HL ;

GOSSARD, AC ;

WIEGMANN, W .

SOLID STATE COMMUNICATIONS, 1982, 41 (10) :707-709

[9] REMOTE IMPURITY SCATTERING IN GAAS-ALGAAS HETEROJUNCTIONS [J].

VANHALL, PJ .

SUPERLATTICES AND MICROSTRUCTURES, 1989, 6 (02) :213-216

[10] MAGNETORESISTANCE IN A GAAS-ALXGA1-XAS HETEROSTRUCTURE WITH DOUBLE SUBBAND OCCUPANCY [J].

VANHOUTEN, H ;

WILLIAMSON, JG ;

BROEKAART, MEI ;

FOXON, CT ;

HARRIS, JJ .

PHYSICAL REVIEW B, 1988, 37 (05) :2756-2758