| Autor: |
Kayanuma, Kentaro, Shirado, Eiji, Debnath, Mukul C., Souma, Izuru, Chen, Zhanghai, Oka, Yasuo |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 6/1/2001, Vol. 89 Issue 11, p7278, 3p, 1 Black and White Photograph, 1 Diagram, 4 Graphs |
| Abstrakt: |
Transport properties of spin-polarized excitons were studied in the double quantum well system composed of Cd[sub 0.95]Mn[sub 0.05]Te and CdTe wells. Circular polarization degrees of the time resolved exciton photoluminescence in magnetic field showed that the spin-polarized excitons diffused from the magnetic quantum well and injected to the non-magnetic quantum well by conserving their spins. The spin-polarized excitons injected into the nonmagnetic well reaches 18% of the nonmagnetic well excitons. From the circular polarization degree and the lifetime of the magnetic quantum well excitons, the spin relaxation time of the excitons in the Cd[sub 0.95]Mn[sub 0.05]Te well was determined as 275-10 ps depending on the magnetic field strength. © 2001 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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