Anisotropic in-plane spin splitting in an asymmetric (001) GaAs/AlGaAs quantum well

Nanoscale Research Letters

关键词: quantum beats;    spin-orbit coupling;    magnetic properties of nanostructures;    optical creation of spin polarized;   

DOI  :  

来源: DOAJ

【 摘 要 】

Abstract

The in-plane spin splitting of conduction-band electron has been investigated in an asymmetric (001) GaAs/Al _x Ga_1-x As 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,

【 授权许可】

Unknown