g-factor tuning in self-assembled quantum dots

被引:16
|
作者
Sheng, Weidong [1 ]
机构
[1] Fudan Univ, Dept Phys, Surface Phys Lab, Shanghai 200433, Peoples R China
关键词
angular momentum; excitons; gallium arsenide; g-factor; ground states; III-V semiconductors; indium compounds; semiconductor quantum dots; tight-binding calculations; SPIN;
D O I
10.1063/1.3367707
中图分类号
O59 [应用物理学];
学科分类号
摘要
The possibility of electrical tuning of exciton g-factors in self-assembled InAs/GaAs quantum dots is explored theoretically by means of a tight-binding-like effective bond-orbital approach. The electron g-factor in the dots of various sizes is found to exhibit very little change over a broad range of the field strength. In contrast, the ground hole state in the dots of high aspect ratio is seen very sensitive to the applied field, its g-factor even changes the sign with the field. The distinct behavior of the electron and hole g-factors in the presence of electric field is explained in terms of nonzero envelope orbital angular momentum carried by the hole states.
引用
收藏
页数:3
相关论文
共 50 条
  • [41] Intersublevel transitions in self-assembled quantum dots
    Boucaud, Philippe
    Sauvage, Sebastien
    Houel, Julien
    COMPTES RENDUS PHYSIQUE, 2008, 9 (08) : 840 - 849
  • [42] Tunnelling and thermoactivation in self-assembled quantum dots
    Larkin, I
    Vagov, A
    PHYSICS OF LOW-DIMENSIONAL STRUCTURES, 2002, 1-2 : 171 - 190
  • [43] Tuning the energy levels of self-assembled InAs quantum dots by rapid thermal annealing
    Hsu, TM
    Lan, YS
    Chang, WH
    Yeh, NT
    Chyi, JI
    APPLIED PHYSICS LETTERS, 2000, 76 (06) : 691 - 693
  • [44] Spin polarization in self-assembled quantum dots
    Sheng, WD
    Hawrylak, P
    PHYSICAL REVIEW B, 2006, 73 (12)
  • [45] Cracking self-assembled InAs quantum dots
    D.M. Bruls
    J.W.A.M. Vugs
    P.M. Koenraad
    M.S. Skolnick
    M. Hopkinson
    J.H. Wolter
    Applied Physics A, 2001, 72 : S205 - S207
  • [46] Optical spectroscopy of self-assembled quantum dots
    Mowbray, D
    Finley, J
    NANO-PHYSICS & BIO-ELECTRONICS: A NEW ODYSSEY, 2002, : 85 - 109
  • [47] Kondo excitons in self-assembled quantum dots
    Govorov, AO
    Karrai, K
    Warburton, RJ
    PHYSICAL REVIEW B, 2003, 67 (24)
  • [48] Spectrum and tunneling in self-assembled quantum dots
    Larkin, I
    Vagov, A
    PHYSICAL REVIEW B, 2003, 67 (11):
  • [49] Spectroscopy of single self-assembled quantum dots
    Zrenner, A
    Findeis, F
    Beham, E
    Markmann, M
    Böhm, G
    Abstreiter, G
    JOURNAL OF LUMINESCENCE, 2000, 87-9 : 35 - 39
  • [50] Spectroscopy of self-assembled quantum dots in ZnSe
    Brown Univ, Providence, United States
    IQEC Int Quantum Electron Conf Proc, (15-16):