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

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

2009-10-08

arxiv.org/abs/0910.1506v1

Appl. Phys. Lett. 96, 136101 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

2 pages

Scientific paper

10.1063/1.3371817

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)].

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