title: Anisotropic in-plane spin splitting in an asymmetric (001) GaAs/AlGaAs quantum well.
abstract: The in-plane spin splitting of conduction-band electron has been investigated in an asymmetric (001) GaAs/AlxGa1-xAs quantum well by time-resolved Kerr rotation technique under a transverse magnetic field. The distinctive anisotropy of the spin splitting was observed while the temperature is below approximately 200 K. This anisotropy emerges from the combined effect of Dresselhaus spin-orbit coupling plus asymmetric potential gradients. We also exploit the temperature dependence of spin-splitting energy. Both the anisotropy of spin splitting and the in-plane effective g-factor decrease with increasing temperature.PACS: 78.47.jm, 71.70.Ej, 75.75.+a, 72.25.Fe.
authors: Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P,O, Box 603, Beijing 100190, China. blliu@iphy.ac.cn.
authors: Huiqi
authors: H
authors: Ye
authors: Changcheng
authors: C
authors: Hu
authors: Gang
authors: G
authors: Wang
authors: Hongming
authors: H
authors: Zhao
authors: Haitao
authors: H
authors: Tian
authors: Xiuwen
authors: X
authors: Zhang
authors: Wenxin
authors: W
authors: Wang
authors: Baoli
authors: B
authors: Liu