INFLUENCE OF A CONSTRICTION ON THE LONGITUDINAL RESISTANCE OF A 2DEG - EFFECTS OF ELECTRICAL FIELDS AND EDGE STATES

被引：6

作者：

HEIN, G ^{[1
]}

SCHNEIDER, P ^{[1
]}

SCHWEITZER, L ^{[1
]}

AHLERS, FJ ^{[1
]}

BLIEK, L ^{[1
]}

NICKEL, H ^{[1
]}

LOSCH, R ^{[1
]}

SCHLAPP, W ^{[1
]}

机构：

[1] FTZ,W-6100 DARMSTADT,GERMANY

来源：

SURFACE SCIENCE | 1992年 / 263卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(92)90355-A

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The breakdown of the quantum Hall effect in constricted GaAlAs heterostructures is studied. For constriction widths w > 100-mu-m very sharp resistance changes are observed. The influence of an additional external field, supplied with an in-plane gate, is to increase the breakdown current if the external field is applied parallel to the Hall field. A model calculation for a confined system of non-interacting electrons in a strong magnetic field and a Hall field shows characteristic features in the density of states which, however, cannot explain the experimental observations.

引用

收藏

页码：293 / 297

页数：5

相关论文

共 11 条

[1] BREAKDOWN OF DISSIPATIONLESS QUANTUM HALL CONDUCTION IN NARROW CHANNELS [J].

BLIEK, L ;

HEIN, G ;

JUCKNISCHKE, D ;

KOSE, V ;

NIEMEYER, J ;

WEIMANN, G ;

SCHLAPP, W .

SURFACE SCIENCE, 1988, 196 (1-3) :156-164

[2] QUANTIZED DISSIPATIVE STATES AT BREAKDOWN OF THE QUANTUM HALL-EFFECT [J].

CAGE, ME ;

REEDTZ, GM ;

YU, DY ;

VANDEGRIFT, CT .

SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 1990, 5 (04) :351-354

[3] NARROW CHANNEL BREAKDOWN IN GAAS/ALGAAS HETEROSTRUCTURES [J].

DIORIO, M ;

SACHRAJDA, AS ;

LANDHEER, D ;

BUCHANAN, M ;

MOORE, T ;

MINER, CJ ;

SPRINGTHORPE, AJ .

SURFACE SCIENCE, 1988, 196 (1-3) :165-170

[4] Size-dependent quantised breakdown of the dissipationless quantum Hall effect in narrow channels [J].

Eaves, L ;

Sheard, FW .

SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 1986, 1 (06) :346-349

[5] TWO-DIMENSIONAL MAGNETO-QUANTUM TRANSPORT ON GAAS-ALXGA1-XAS HETEROSTRUCTURES UNDER NON-OHMIC CONDITIONS [J].

EBERT, G ;

VONKLITZING, K ;

PLOOG, K ;

WEIMANN, G .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1983, 16 (28) :5441-5448

[6]

FONTEIN PF, 1990, SPRINGER SERIES SOLI, V97, P162

[7]

HAUG RJ, 1989, SPRINGER SERIES SOLI, V87, P185

[8] ON THE RELATIONSHIP OF DRIFT-CURRENTS AND POTENTIAL CHANGES TO THE QUANTUM HALL-EFFECT [J].

JOHNSTON, R ;

SCHWEITZER, L .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1988, 70 (01) :25-29

[9] RESONANCE TUNNELING AND BREAKDOWN OF THE QUANTUM HALL-EFFECT IN STRONG ELECTRIC-FIELDS [J].

POKROVSKY, VL ;

PRYADKO, LP ;

TALAPOV, AL .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (06) :1583-1592

[10] EVIDENCE FOR AN INHOMOGENEITY SIZE EFFECT IN NARROW GAAS ALXGA1-XAS CONSTRICTIONS [J].

SACHRAJDA, AS ;

LANDHEER, D ;

BOULET, R ;

MOORE, T .

PHYSICAL REVIEW B, 1989, 39 (14) :10460-10463