Optically induced long-lived electron spin coherence in ZnSe∕BeTe type-II quantum wells
- 14 April 2008
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 92 (15) , 153101
- https://doi.org/10.1063/1.2907577
Abstract
The spin coherence of photoexcited electrons in type-II quantum wells has been investigated by the time-resolved Kerr rotation technique. Fast and efficient escape of photoexcited holes from the ZnSe layers to the BeTe layers suppresses the electron-hole recombination and their exchange interaction. This effect leads to the formation of dense electrons in ZnSe layers and long electron spin dephasing time reaching a value of at .
Keywords
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