Quantum interference effects in a strongly fluctuating magnetic field

被引：12

作者：

Gusev, GM

Gennser, U

Kleber, X

Maude, DK

Portal, JC

Lubyshev, DI

Basmaji, P

Silva, MDA

Rossi, JC

Nastaushev, YV

机构：

[1] CNRS, HIGH FIELD MAGNET LAB, F-38042 GRENOBLE, FRANCE

[2] INST NATL SCI APPL, F-31077 TOULOUSE, FRANCE

[3] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Paulo, BRAZIL

[4] UNIV FED SAO CARLOS, SAO CARLOS, SP, BRAZIL

[5] RUSSIAN ACAD SCI, INST SEMICOND PHYS, SIBERIAN BRANCH, NOVOSIBIRSK 630090, RUSSIA

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.53.13641

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the negative magnetoresistance and universal conductance fluctuations (UCF's) in a two-dimensional electron gas (2DEG) grown on substrates with prepatterned, submicrometer dimples. Since the 2DEG is sensitive only to the normal component of B, electrons move in a spatially inhomogeneous (B perpendicular to the substrate: B-perpendicular to) or sign-alternating random magnetic field (B parallel to the substrate: B-parallel to) Quantum interference effects in a random magnetic field due to the magnetic flux appear only due to second-order effects. The UCF's are found to be 1.5-2 times smaller for B-parallel to than for B-perpendicular to.

引用

页码：13641 / 13644

页数：4

共 22 条

[1] SCALING THEORY OF LOCALIZATION - ABSENCE OF QUANTUM DIFFUSION IN 2 DIMENSIONS [J].