Spin-dependent transport in a magnetic two-dimensional electron gas

被引:8
|
作者
Smorchkova, IP
Kikkawa, JM
Samarth, N [1 ]
Awschalom, DD
机构
[1] Penn State Univ, Dept Phys, University Pk, PA 16802 USA
[2] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
来源
PHYSICA E | 1998年 / 2卷 / 1-4期
基金
美国国家科学基金会;
关键词
magneto-transport; II-VI compounds semiconductors; magnetic semiconductors;
D O I
10.1016/S1386-9477(98)00079-4
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Magneto-transport and magneto-optical probes are used to interrogate spin-dependent transport in magnetic heterostructures wherein a two dimensional electron gas (2DEG) is exchange-coupled to local moments. At low temperatures, the significant s-d exchange-enhanced spin splitting in these "magnetic" 2DEGs is responsible for the observation of unusual transport properties such as a complete spin polarization of the gas at large Landau level filling factors and a pronounced, non-monotonic background magneto-resistance. Magneto-transport measurements of gated samples performed in a parallel field geometry are used to systematically study the variation of the magneto-resistance with sheet concentration, yielding new insights into the dependence of spin transport on the Fermi energy of the majority spin carriers. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:381 / 387
页数:7
相关论文
共 50 条
  • [1] Spin-dependent transport for a two-dimensional electron gas with magnetic barriers
    王海艳
    段子刚
    廖文虎
    周光辉
    [J]. Chinese Physics B, 2010, 19 (03) : 490 - 494
  • [2] Spin-dependent transport for a two-dimensional electron gas with magnetic barriers
    Wang Hai-Yan
    Duan Zi-Gang
    Liao Wen-Hu
    Zhou Guang-Hui
    [J]. CHINESE PHYSICS B, 2010, 19 (03)
  • [3] Spin-dependent transport in a two-dimensional GaAs electron gas in a parallel magnetic field
    Cheng, YM
    Huang, TY
    Pao, CH
    Lee, CC
    Liang, CT
    Simmons, MY
    Smith, CG
    Ritchie, DA
    Pepper, M
    Kim, GH
    Leem, JY
    [J]. PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2002, 12 (1-4): : 412 - 415
  • [4] Spin-dependent transport in a dilute two-dimensional GaAs electron gas in a parallel magnetic field
    Liang, CT
    Smith, CG
    Simmons, MY
    Ritchie, DA
    [J]. PHYSICAL REVIEW B, 2001, 64 (23)
  • [5] Spin-dependent transport in a dilute two-dimensional GaAs electron gas in an in-plane magnetic field
    Liang, CT
    Smith, CG
    Simmons, MY
    Kim, GH
    Ritchie, DA
    Pepper, M
    [J]. PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2003, 18 (1-3): : 141 - 142
  • [6] Spin-dependent transport in a two-dimensional GaAs electron system
    Liang, CT
    Huang, TY
    Cheng, YM
    Pao, CH
    Lee, CC
    Kim, GH
    Leem, JY
    [J]. CHINESE JOURNAL OF PHYSICS, 2001, 39 (04) : 369 - 374
  • [7] Measurement of spin-dependent conductivities in a two-dimensional electron gas
    Ebrahimnejad, H.
    Ren, Y.
    Frolov, S. M.
    Adagideli, I.
    Folk, J. A.
    Wegscheider, W.
    [J]. PHYSICAL REVIEW B, 2010, 82 (04):
  • [8] Spin-dependent electron transport in two-dimensional waveguides of arbitrary geometry
    Akguc, Gursoy B.
    Gong, Jiangbin
    [J]. PHYSICAL REVIEW B, 2008, 77 (20)
  • [9] Spin-dependent properties of a two-dimensional electron gas with ferromagnetic gates
    Ciuti, C
    McGuire, JP
    Sham, LJ
    [J]. APPLIED PHYSICS LETTERS, 2002, 81 (25) : 4781 - 4783
  • [10] Spin transport and localization in a magnetic two-dimensional electron gas
    Smorchkova, IP
    Samarth, N
    Kikkawa, JM
    Awschalom, DD
    [J]. PHYSICAL REVIEW LETTERS, 1997, 78 (18) : 3571 - 3574