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)].
Categories: cond-mat.mes-hall cond-mat.mtrl-sci