Ultrafast Exciton Spin Dynamics In Cd1-Xmnxte Quantum Wells

K Seo,K Nishibayashi,Zh Chen,K Kayanuma,A Murayama, Y Oka

PHYSICS OF SEMICONDUCTORS, PTS A AND B（2005）

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摘要

Dynamics of spin-polarized excitons has been studied in diluted magnetic semiconductor quantum wells by femto-second pump-probe spectroscopy in magnetic fields. Transient processes of injection and spin relaxation of excitons are measured in the quantum wells. The injection time and the spin-flip time of excitons are obtained as 5 ps and 41 ps, respectively.

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关键词

spin wave,magnetic field,magnetic semiconductor,quantum well,spin polarization

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