Ballistic electron transport in hybrid ferromagnet/two-dimensional electron gas sandwich nanostructure: Spin polarization and magnetoresistance effect

被引：27
|
作者：
Wang, Y. [1 ]
Chen, N. F. [1 ,2 ]
Jiang, Y. [3 ]
Zhang, X. W. [1 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat Sci, Beijing 100083, Peoples R China
[2] Chinese Acad Sci, Natl Lab Micrograv, Inst Mech, Beijing 100080, Peoples R China
[3] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
来源：
JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 01期
关键词：
GIANT MAGNETORESISTANCE; MAGNETIC-BARRIER; MAGNETOCONDUCTANCE; INJECTION;
D O I：
10.1063/1.3041477
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have theoretically investigated ballistic electron transport through a combination of magnetic-electric barrier based on a vertical ferromagnet/two-dimensional electron gas/ferromagnet sandwich structure, which can be experimentally realized by depositing asymmetric metallic magnetic stripes both on top and bottom of modulation-doped semiconductor heterostructures. Our numerical results have confirmed the existence of finite spin polarization even though only antisymmetric stray field B-z is considered. By switching the relative magnetization of ferromagnetic layers, the device in discussion shows evident magnetoconductance. In particular, both spin polarization and magnetoconductance can be efficiently enhanced by proper electrostatic barrier up to the optimal value relying on the specific magnetic-electric modulation. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3041477]
引用
收藏
页数：5
相关论文
共 50 条
  • [11] Spin transport properties in two-dimensional electron gas
    Takahashi, Y
    Shizume, K
    Masuhara, N
    PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2000, 7 (3-4): : 986 - 991
  • [12] Effect of parallel high magnetic field on two-dimensional electron gas investigated by ballistic electron transport
    Oto, K
    Takaoka, S
    Murase, K
    Gamo, K
    PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2001, 11 (2-3): : 177 - 181
  • [13] Resonant spin polarization and spin current in a two-dimensional electron gas
    Duckheim, Mathias
    Loss, Daniel
    PHYSICAL REVIEW B, 2007, 75 (20):
  • [14] Spin polarization of two-dimensional electron gas in a hybrid magnetic-electric barrier
    Lu, MW
    SOLID STATE COMMUNICATIONS, 2005, 134 (10) : 683 - 688
  • [15] Thermally induced spin polarization of a two-dimensional electron gas
    Dyrdal, A.
    Inglot, M.
    Dugaev, V. K.
    Barnas, J.
    PHYSICAL REVIEW B, 2013, 87 (24)
  • [16] Spin-polarization transition in the two-dimensional electron gas
    Varsano, D
    Moroni, S
    Senatore, G
    EUROPHYSICS LETTERS, 2001, 53 (03): : 348 - 353
  • [17] Magnetoresistance and spin polarization in the insulating regime of a Si two-dimensional electron system
    Ooya, M
    Toyama, K
    Okamoto, T
    PHYSICAL REVIEW B, 2005, 72 (07):
  • [18] Controllable electron-spin polarization by δ-doping in a hybrid ferromagnet and semiconductor nanostructure
    Lu, M. W.
    Wang, Z. Y.
    Liang, Y. L.
    An, Y. B.
    Li, L. Q.
    EPL, 2013, 101 (04)
  • [19] Nonmonotonic magnetoresistance of two-dimensional electron systems in the ballistic regime
    Kuntsevich, A. Yu.
    Minkov, G. M.
    Sherstobitov, A. A.
    Pudalov, V. M.
    PHYSICAL REVIEW B, 2009, 79 (20):
  • [20] Coherent Spin Dynamics of a Two-Dimensional Electron Gas in the Mode of a Hall Ferromagnet
    A. V. Larionov
    E. Stepanets-Khussein
    L. V. Kulik
    Semiconductors, 2020, 54 : 1166 - 1170
12345