MAGNETOTRANSPORT OF A 2-DIMENSIONAL ELECTRON-GAS IN A SPATIALLY RANDOM MAGNETIC-FIELD

被引：57
作者：
MANCOFF, FB
CLARKE, RM
MARCUS, CM
ZHANG, SC
CAMPMAN, K
GOSSARD, AC
机构：
[1] IBM CORP,DIV RES,ALMADEN RES CTR,SAN JOSE,CA 95120
[2] UNIV CALIF SANTA BARBARA,DEPT MAT,SANTA BARBARA,CA 93106
来源：
PHYSICAL REVIEW B | 1995年 / 51卷 / 19期
关键词：
D O I：
10.1103/PhysRevB.51.13269
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study magnetotransport of a two-dimensional electron gas (2DEG) subject to a random magnetic field produced by a demagnetized NdFeB magnet. A large, positive, ssV-shaped magnetoresistance is observed in a perpendicular applied external field. This effect is interpreted classically in terms of a nonuniform local Hall resistivity. Depleting the 2DEG with a gate beneath the random magnet yields a crossover from positive to negative magnetoresistance at a sheet resistance h/e2. © 1995 The American Physical Society.
引用
收藏
页码：13269 / 13273
页数：5
相关论文
共 33 条
  • [1] LOCALIZATION OF CHARGED QUANTUM PARTICLES IN A STATIC RANDOM MAGNETIC-FIELD
    ARONOV, AG
    MIRLIN, AD
    WOLFLE, P
    [J]. PHYSICAL REVIEW B, 1994, 49 (23): : 16609 - 16613
  • [2] LOCALIZATION PROBLEM OF A 2-DIMENSIONAL LATTICE IN A RANDOM MAGNETIC-FIELD
    AVISHAI, Y
    HATSUGAI, Y
    KOHMOTO, M
    [J]. PHYSICAL REVIEW B, 1993, 47 (15): : 9561 - 9565
  • [3] Balagurov B. Ya., 1987, Soviet Physics - JETP, V66, P1079
  • [4] 2-DIMENSIONAL ELECTRON-GAS AS A FLUX DETECTOR FOR A TYPE-II SUPERCONDUCTING FILM
    BENDING, SJ
    VONKLITZING, K
    PLOOG, K
    [J]. PHYSICAL REVIEW B, 1990, 42 (16) : 9859 - 9864
  • [5] WEAK LOCALIZATION IN A DISTRIBUTION OF MAGNETIC-FLUX TUBES
    BENDING, SJ
    VONKLITZING, K
    PLOOG, K
    [J]. PHYSICAL REVIEW LETTERS, 1990, 65 (08) : 1060 - 1063
  • [6] DU RR, 1993, PHYS REV LETT, V70, P2977
  • [7] NEW FRACTIONAL QUANTUM HALL STATE IN DOUBLE-LAYER 2-DIMENSIONAL ELECTRON-SYSTEMS
    EISENSTEIN, JP
    BOEBINGER, GS
    PFEIFFER, LN
    WEST, KW
    HE, S
    [J]. PHYSICAL REVIEW LETTERS, 1992, 68 (09) : 1383 - 1386
  • [8] BALLISTIC 2-DIMENSIONAL ELECTRONS IN A RANDOM MAGNETIC-FIELD
    GEIM, AK
    BENDING, SJ
    GRIGORIEVA, IV
    BLAMIRE, MG
    [J]. PHYSICAL REVIEW B, 1994, 49 (08): : 5749 - 5752
  • [9] ASYMMETRIC SCATTERING AND DIFFRACTION OF 2-DIMENSIONAL ELECTRONS AT QUANTIZED TUBES OF MAGNETIC-FLUX
    GEIM, AK
    BENDING, SJ
    GRIGORIEVA, IV
    [J]. PHYSICAL REVIEW LETTERS, 1992, 69 (15) : 2252 - 2255
  • [10] MAGNETIC-PROPERTIES OF Y2FE14B AND ND2FE14B SINGLE-CRYSTALS
    GIVORD, D
    LI, HS
    DELABATHIE, RP
    [J]. SOLID STATE COMMUNICATIONS, 1984, 51 (11) : 857 - 860
1234