Electron Spin Relaxation in a Semiconductor Quantum Well
Vadim I. Puller, Lev G. Mourokh, Norman J.M. Horing, and Anatoly Yu., Smirnov
TL;DR
This paper develops a microscopic theory for electron spin relaxation in semiconductor quantum wells, analyzing how relaxation rates depend on quantum well parameters, magnetic field, and temperature.
Contribution
It introduces a detailed microscopic model for spin relaxation in quantum wells, including derivation of Bloch equations and relaxation times.
Findings
Relaxation rate depends on quantum well subband energy.
Magnetic field influences spin relaxation times.
Temperature variations affect relaxation dynamics.
Abstract
A fully microscopic theory of electron spin relaxation by the D'yakonov-Perel' type spin-orbit coupling is developed for a semiconductor quantum well with a magnetic field applied in the growth direction of the well. We derive the Bloch equations for an electron spin in the well and define microscopic expressions for the spin relaxation times. The dependencies of the electron spin relaxation rate on the lowest quantum well subband energy, magnetic field and temperature are analyzed.
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