Filters
Results 1 - 1 of 1
Results 1 - 1 of 1.
Search took: 0.016 seconds
AbstractAbstract
[en] We study propagation dynamics of exciton spins in a system composed of high-density self-assembled quantum dots (QDs) of CdSe and a diluted magnetic semiconductor (DMS) layer of ZnMnSe, where spin-polarized excitons are generated in the DMS layer and are subsequently injected into the QDs. The degree of circular polarization, P, of excitonic photoluminescence at 5 T in the coupled QDs shows a rapid increase with increasing delay time after a linearly polarized pulsed excitation, indicating the exciton-spin injection from the ZnMnSe to CdSe-QDs. The P value tends to decay gradually because of the exciton-spin relaxation in the QDs after the injection. The spin-polarized excitons in the QD ensemble migrate simultaneously from the QDs with higher exciton energies to those with lower exciton energies, where the exciton-spins relax inside each dot during the migration. Therefore, the observed P values in the QD emission band are affected by this feeding of the relaxed spins. (copyright 2009 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)
Primary Subject
Source
8. International conference on excitonic processes in condensed matter; Kyoto (Japan); 22-27 Jun 2008; 1610-1634(200901)6:1<50::AID-PSSC200879875>3.0.TX; Available from: http://dx.doi.org/10.1002/pssc.200879875; With 3 figs., 6 refs.; 2-3
Record Type
Journal Article
Literature Type
Conference
Journal
Physica Status Solidi. C, Conferences; ISSN 1610-1634;
; v. 6(1); p. 50-52

Country of publication
CADMIUM SELENIDES, EMISSION SPECTRA, ENERGY SPECTRA, EXCITONS, LAYERS, MAGNETIC FIELDS, MAGNETIC SEMICONDUCTORS, MANGANESE SELENIDES, PHOTOLUMINESCENCE, POLARIZATION, QUANTUM DOTS, RELAXATION, RELAXATION TIME, SPIN FLIP, SPIN ORIENTATION, TEMPERATURE RANGE 0000-0013 K, VISIBLE SPECTRA, ZINC SELENIDES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL