TITLE

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

AUTHOR(S)
Hong Ma; Zuanming Jin; Guohong Ma; Weiming Liu; Sing Hai Tang
PUB. DATE
June 2009
SOURCE
Applied Physics Letters;6/15/2009, Vol. 94 Issue 24, p241112
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Excitation photon energy and carrier density dependence of spin dynamics in bulk CdTe crystal was studied by time resolved pump-probe reflectivity technique at room temperature. The results show that spin relaxation time decreases monotonously. While with increasing excitation carrier density, the time constants increases initially then decreases after reaching a maximum value. Our experimental results reveal that both D’yakonov–Perel’ [M. I. D’yakonov and V. I. Perel’, Sov. Phys. JETP 38, 177 (1974)] and Elliot–Yafet [R. J. Elliott, Phys. Rev. 96, 266 (1954); Y. Yafet, Solid State Phys. 14, 1 (1963)] mechanisms dominate the spin relaxation process in CdTe crystal.
ACCESSION #
42223748

 

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