Analysis of phonon-induced spin relaxation processes in silicon

Details Analysis of phonon-induced spin relaxation processes in silicon Analysis of phonon-induced spin relaxation processes in silicon

2012-01-31

arxiv.org/abs/1201.6660v1

Physics

Condensed Matter

Materials Science

30 pages,9 figures

Scientific paper

We study all of the leading-order contributions to spin relaxation of \textit{conduction} electrons in silicon due to the electron-phonon interaction. Using group theory, $k\cdot p$ perturbation method and rigid-ion model, we derive an extensive set of matrix element expressions for all of the important spin-flip transitions in the multi-valley conduction band. The scattering angle has an explicit dependence on the electron wavevectors, phonon polarization, valley position and spin orientation of the electron. Comparison of the derived analytical expressions with results of empirical pseudopotential and adiabatic band charge models shows excellent agreement.

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