Spin relaxation due to spin-orbit coupling in multi-electron quantum dots

被引：2
|
作者：
Climente, J. I. [1 ]
Bertoni, A. [1 ]
Goldoni, G. [1 ,2 ]
Rontani, M. [1 ]
Molinari, E. [1 ,2 ]
机构：
[1] CNR, INFM, Natl Ctr NanoStruct & BioSyst Surfaces S3, I-41100 Modena, Italy
[2] Univ Modena & Reggio Emilia, Dipartimento Fis, I-41100 Modena, Italy
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2008年 / 40卷 / 06期
关键词：
quantum dots; spin-orbit; phonon scattering; many-body effects;
D O I：
10.1016/j.physe.2007.09.127
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We show that the number of electrons confined in a semiconductor quantum dot has a strong influence over the Rashba and Dresselhaus spin-orbit (SO) admixture. This can be exploited to improve the lifetime of spin excitations, as compared to the usual one- and two-electron devices. The physical mechanisms reducing SO admixture are discussed, and numerical results for realistic weakly confined GaAs/AlGaAs dots are reported. (c) 2007 Elsevier B.V. AD rights reserved.
引用
收藏
页码：1804 / 1806
页数：3
相关论文
共 50 条
  • [1] Spin relaxation in quantum dots with random spin-orbit coupling
    Sherman, EY
    Lockwood, DJ
    [J]. PHYSICAL REVIEW B, 2005, 72 (12)
  • [2] Parametric properties of the electron spin relaxation due to spin-orbit interaction in InAs quantum dots
    Jiang Hong-Liang
    Zhang Rong-Jun
    Zhou Hong-Ming
    Yao Duan-Zheng
    Xiong Gui-Guang
    [J]. ACTA PHYSICA SINICA, 2011, 60 (01)
  • [3] Spin relaxation due to the phonon modulation of the spin-orbit interaction in quantum dots
    Alcalde, AM
    Neto, OOD
    Marques, GE
    [J]. MICROELECTRONICS JOURNAL, 2005, 36 (3-6) : 241 - 243
  • [4] Exciton-spin relaxation in quantum dots due to spin-orbit interaction
    Tsitsishvili, E
    Von Baltz, R
    Kalt, H
    [J]. PHYSICAL REVIEW B, 2005, 72 (15)
  • [5] Spin relaxation and anticrossing in quantum dots: Rashba versus Dresselhaus spin-orbit coupling
    Bulaev, DV
    Loss, D
    [J]. PHYSICAL REVIEW B, 2005, 71 (20)
  • [6] Quantum dots with Rashba spin-orbit coupling
    Governale, M
    [J]. PHYSICAL REVIEW LETTERS, 2002, 89 (20)
  • [7] Spin-orbit coupling and intrinsic spin mixing in quantum dots
    Destefani, CF
    Ulloa, SE
    Marques, GE
    [J]. PHYSICAL REVIEW B, 2004, 69 (12):
  • [8] Spin relaxation dynamics of quasiclassical electrons in ballistic quantum dots with strong spin-orbit coupling
    Chang, CH
    Mal'shukov, AG
    Chao, KA
    [J]. PHYSICAL REVIEW B, 2004, 70 (24) : 1 - 13
  • [9] Exciton-spin relaxation in weakly confining quantum dots due to spin-orbit interaction
    Tsitsishvili, E.
    Kalt, H.
    Baltz, R. v.
    [J]. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2006, 243 (10): : 2274 - 2284
  • [10] Spin relaxation in lateral quantum dots: Effects of spin-orbit interaction
    Florescu, M
    Hawrylak, P
    [J]. PHYSICAL REVIEW B, 2006, 73 (04)
12345