Optically induced spin-polarized transport in a two-level quantum dot

被引：6
|
作者：
Ke, Sha-Sha [1 ,2 ]
Lue, Hai-Feng [2 ,3 ]
Li, Gao-Xiang [1 ]
机构：
[1] Huazhong Normal Univ, Dept Phys, Wuhan 430079, Peoples R China
[2] Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China
[3] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
来源：
JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 02期
关键词：
quantum dots; shot noise; spin polarised transport;
D O I：
10.1063/1.3072629
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We analyze theoretically the pumped spin current and its shot noise spectra in a two-level quantum dot system, where the dot is irradiated by circularly polarized light. The device operates at a certain chemical potential configuration in the absence of magnetic field and ferromagnetic spin injection. The spin-resolved shot noise can be modulated by the light nonmonotonously and always indicates a sub-Poissonian type.
引用
收藏
页数：7
相关论文
共 50 条
  • [1] Spin-polarized transport through a two-level quantum dot driven by ac fields
    Lue, Hai-Feng
    Ke, Sha-Sha
    Zu, Xiao-Tao
    Zhang, Huai-Wu
    JOURNAL OF APPLIED PHYSICS, 2011, 109 (05)
  • [2] Noise Enhancement due to Telegraphic Switching in a Two-Level Quantum Dot Coupled to Spin-Polarized Leads
    Ptaszynski, K.
    ACTA PHYSICA POLONICA A, 2018, 133 (03) : 526 - 528
  • [3] Transport through a partially spin-polarized quantum dot
    Berkovits, R
    PHYSICA B, 2000, 284 : 1782 - 1783
  • [4] Spin precession in spin-polarized transport through an interacting quantum dot
    Rudzinski, W
    Barnas, J
    Swirkowicz, R
    Wilczynski, M
    PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2005, 242 (02): : 342 - 346
  • [5] Spin-polarized transport through a single-level quantum dot in the Kondo regime
    Swirkowicz, R
    Wilczynski, M
    Barnas, J
    JOURNAL OF PHYSICS-CONDENSED MATTER, 2006, 18 (07) : 2291 - 2304
  • [6] Spin-polarized electronic transport in a spin-valve based on a quantum dot
    Rudzinski, WJ
    Michalak, L
    Barnas, J
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 272 : 1933 - 1935
  • [7] Spin-polarized transport in ferromagnet/Rashba quantum dot/ferromagnet system
    Wang, Da-Kun
    Cheng, Shu-Guang
    PHYSICS LETTERS A, 2007, 365 (03) : 235 - 239
  • [8] Spin-polarized transport through double quantum-dot-array
    An Xing-Tao
    Mu Hui-Ying
    Xian Li-Fen
    Liu Jian-Jun
    ACTA PHYSICA SINICA, 2012, 61 (15)
  • [9] Spin-transport dynamics of optically spin-polarized electrons in GaAs quantum wires
    Sogawa, T
    Ando, H
    Ando, S
    PHYSICAL REVIEW B, 2000, 61 (08): : 5535 - 5539
  • [10] Spin-polarized pumping in a double quantum dot
    Cota, E
    Aguado, R
    Creffield, CE
    Platero, G
    NANOTECHNOLOGY, 2003, 14 (02) : 152 - 156
12345