Spin-dependent electron transport through a parallel double-quantum-dot structure

被引：4
作者：
Gong, Weijiang [1 ]
Zheng, Yisong [2 ]
机构：
[1] Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China
[2] Jilin Univ, Dept Phys, Changchun 130023, Peoples R China
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2009年 / 41卷 / 04期
关键词：
Quantum dot; Electron transport; Rashba interaction; PROPOSAL;
D O I：
10.1016/j.physe.2008.10.007
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Electron transport properties in a parallel double-quantum-dot structure with three terminals are theoretically studied. By introducing a local Rashba spin-orbit coupling, we find that an incident electron from one terminal can select a specific terminal to depart from the quantum dots according to its spin state. As a result, spin polarization and spin separation can be simultaneously realized in this structure. And spin polarizations in different terminals can be inverted by tuning the structure parameters. The underlying quantum interference that gives rise to such a result is analyzed in the language of Feynman paths for the electron transmission. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：574 / 580
页数：7
相关论文
共 21 条
  • [1] OSCILLATORY EFFECTS AND THE MAGNETIC-SUSCEPTIBILITY OF CARRIERS IN INVERSION-LAYERS
    BYCHKOV, YA
    RASHBA, EI
    [J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1984, 17 (33): : 6039 - 6045
  • [2] Spin-polarized transport through an Aharonov-Bohm interferometer with Rashba spin-orbit interaction
    Chi, Feng
    Li, Shu-Shen
    [J]. JOURNAL OF APPLIED PHYSICS, 2006, 100 (11)
  • [3] ELECTRONIC ANALOG OF THE ELECTROOPTIC MODULATOR
    DATTA, S
    DAS, B
    [J]. APPLIED PHYSICS LETTERS, 1990, 56 (07) : 665 - 667
  • [4] Experimental and theoretical approach to spin splitting in modulation-doped InxGa1-xAs/InP quantum wells for B->0
    Engels, G
    Lange, J
    Schäpers, T
    Lüth, H
    [J]. PHYSICAL REVIEW B, 1997, 55 (04) : R1958 - R1961
  • [5] Well-defined insulating band for electronic transport through a laterally coupled double-quantum-dot chain:: Nonequilibrium Green's function calculations
    Gong, Weijiang
    Zheng, Yisong
    Liu, Yu
    Lu, Tianquan
    [J]. PHYSICAL REVIEW B, 2006, 73 (24)
  • [6] Large Rashba splitting in InAs quantum wells due to electron wave function penetration into the barrier layers
    Grundler, D
    [J]. PHYSICAL REVIEW LETTERS, 2000, 84 (26) : 6074 - 6077
  • [7] Direct observation of optically injected spin-polarized currents in semiconductors -: art. no. 216601
    Hübner, J
    Rühle, WW
    Klude, M
    Hommel, D
    Bhat, RDR
    Sipe, JE
    van Driel, HM
    [J]. PHYSICAL REVIEW LETTERS, 2003, 90 (21) : 4
  • [8] TIME-DEPENDENT TRANSPORT IN INTERACTING AND NONINTERACTING RESONANT-TUNNELING SYSTEMS
    JAUHO, AP
    WINGREEN, NS
    MEIR, Y
    [J]. PHYSICAL REVIEW B, 1994, 50 (08): : 5528 - 5544
  • [9] Observation of the spin hall effect in semiconductors
    Kato, YK
    Myers, RC
    Gossard, AC
    Awschalom, DD
    [J]. SCIENCE, 2004, 306 (5703) : 1910 - 1913
  • [10] I-V characteristic of electronic transport through a quantum dot chain:: The role of antiresonance
    Liu, Yu
    Zheng, Yisong
    Gong, Weijiang
    Lu, Tianquan
    [J]. PHYSICS LETTERS A, 2006, 360 (01) : 154 - 163
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