Influence of electron localization on the spin dephasing anisotropy in bias GaAs/AlGaAs coupled quantum wells
A. V. Sekretenko, A. V. Larionov
Institute of Solid State Physics RAS, 142432 Chernogolovka, Russia
Abstract
Electron spin dephasing anisotropy is studied in
GaAs/AlGaAs coupled quantum wells by means of a time-resolved Kerr
rotation technique. It is found that the spin dephasing rate is
strongly dependent on magnetic field and is significantly
anisotropic in the quantum well plane. The presented theoretical
model describes the experimental results by taking into account
both the electron g-factor spreading and the irreversible electron
spin relaxation which are caused by the electron localisation. The
suggested theoretical description is in a good agreement with
experimental data.