Abstract
We perform a study of the effect of the high in-plane electric field on spin precession and spin dephasing due to the D’yakonov–Perel’ mechanism in -type GaAs (100) quantum wells by constructing and numerically solving kinetic Bloch equations. We self-consistently include all scattering such as electronphonon,electron nonmagnetic impurity as well as electron–electron Coulomb scattering in our theory and systematically investigate how the spin precession and spin dephasing are affected by the high electric field under various conditions. The hot-electron distribution functions and spin correlations are calculated rigorously in our theory. It is found that the D’yakonov–Perel’ term in the electric field provides a nonvanishing effective magnetic field that alters the period of spin precession. Moreover, spin dephasing is markedly affected by the electric field. The important contribution of the electron–electron scattering to spin dephasing is also discussed.
1 More- Received 8 January 2004
DOI:https://doi.org/10.1103/PhysRevB.69.245320
©2004 American Physical Society