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Spin dynamics in bulk CdTe at room temperature

✍ Scribed by P. Nahálková; P. Němec; D. Sprinzl; E. Belas; P. Horodyský; J. Franc; P. Hlídek; P. Malý

Book ID: 103843445
Publisher: Elsevier Science
Year: 2006
Tongue: English
Weight: 157 KB
Volume: 126
Category: Article
ISSN: 0921-5107
DOI: 10.1016/j.mseb.2005.09.014

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✦ Synopsis

In this paper, we report on the room temperature dynamics of spin-polarized carriers in undoped bulk CdTe. Platelets of CdTe with different concentration of preparation-induced dislocations were prepared by combining the mechanical polishing and chemical etching. Using the polarization-resolved pump-probe experiment in transmission geometry, we have observed a systematic decrease of both the signal polarization and the electron spin dephasing time (from 52 to 36 ps) with the increased concentration of defects. We have suggested that the Elliot-Yafet mechanism might be the dominant spin dephasing mechanism in platelets of CdTe at room temperature.

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