Comment on "Photon energy and carrier density dependence of spin dynamics in bulk CdTe crystal at room temperature"

Abstract

We comment on the conclusion by Ma et al. [Appl. Phys. Lett. {\bf 94}, 241112 (2009)] that the Elliott-Yafet mechanism is more important than the D'yakonov-Perel' mechanism at high carrier density in intrinsic bulk CdTe at room temperature. We point out that the spin relaxation is solely from the D'yakonov-Perel' mechanism. The observed peak in the density dependence of spin relaxation time is exactly what we predicted in a recent work [Phys. Rev. B {\bf 79}, 125206 (2009)].

2 pages

References in corpus (1)

• Electron spin relaxation in bulk III-V semiconductors from a fully microscopic kinetic spin Bloch equation approach

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• Multivalley spin relaxation in $n$-type bulk GaAs in the presence of high electric fields