Spin conductance and spin filtering in ferromagnetic semiconductor quantum point contacts

被引：0
作者：
Vali, R. [1 ]
Salehi, S. [1 ]
机构：
[1] Damghan Univ, Sch Phys, Damghan, Iran
来源：
SOLID STATE COMMUNICATIONS | 2010年 / 150卷 / 47-48期
关键词：
Quantum point contacts; Ferromagnetic semiconductors; Spin filtering; MAGNETIC SEMICONDUCTOR; TRANSPORT; TRANSMISSION; QUANTIZATION; POLARIZATION; JUNCTIONS; HOLES;
D O I：
10.1016/j.ssc.2010.10.012
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
By combining the spin dependent transport properties of the ferromagnetic semiconductors with the basic physics of the quantum point contacts, we investigate the spin polarized transport through ferromagnetic semiconductor quantum point contacts. We find that the spin conductance strongly depends on the spin orientation, the magnitude of the spin splitting energy and the shape of the cross sections of the point contacts. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2306 / 2309
页数：4
相关论文
共 24 条
  • [1] Shape effects on conductance quantization in three-dimensional nanowires: Hard versus soft potentials
    Bogachek, EN
    Scherbakov, AG
    Landman, U
    [J]. PHYSICAL REVIEW B, 1997, 56 (03): : 1065 - 1068
  • [2] Scattering and conductance quantization in three-dimensional metal nanocontacts
    Brandbyge, M
    Jacobsen, KW
    Norskov, JK
    [J]. PHYSICAL REVIEW B, 1997, 55 (04): : 2637 - 2650
  • [3] QUANTIZED TRANSMISSION OF A SADDLE-POINT CONSTRICTION
    BUTTIKER, M
    [J]. PHYSICAL REVIEW B, 1990, 41 (11): : 7906 - 7909
  • [4] Spin-dependent transport of holes in microstructures periodically modulated by diluted magnetic semiconductor sections
    Ciftci, YO
    Wang, XF
    Vasilopoulos, P
    [J]. PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2005, 30 (1-2) : 74 - 80
  • [5] Ferromagnetic nanodevices based on (Ga,Mn)As
    Edmonds, K. W.
    [J]. CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 2006, 10 (02) : 108 - 113
  • [6] Application of narrow band-gap materials in nanoscale spin filters
    Gilbert, MJ
    Bird, JP
    Sugaya, T
    Akis, R
    [J]. PHYSICA B-CONDENSED MATTER, 2002, 314 (1-4) : 230 - 234
  • [7] Grabecki G, 2006, MATER SCI-POLAND, V24, P591
  • [8] A spin filter with a quantum point contact in a dilute magnetic semiconductor
    Ignatenko, SA
    Borisenko, VE
    [J]. SEMICONDUCTORS, 2005, 39 (09) : 1048 - 1052
  • [9] The tunneling magnetoresistance in GaMnAs/GaAs/GaMnAs junctions
    Ju, Y.
    Shen, R.
    Zheng, Z. M.
    Xing, D. Y.
    [J]. PHYSICS LETTERS A, 2007, 371 (04) : 327 - 331
  • [10] ELECTRICAL RESISTANCE OF DISORDERED ONE-DIMENSIONAL LATTICES
    LANDAUER, R
    [J]. PHILOSOPHICAL MAGAZINE, 1970, 21 (172): : 863 - &
123