Spin-wave-assisted photoluminescence in MnS
- 27 August 1990
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 2 (34) , 7225-7231
- https://doi.org/10.1088/0953-8984/2/34/015
Abstract
The author reports the observation of the photoluminescence in antiferromagnetic MnS. A strong emission band centred at 1.43 eV is observed at 78 K in MnS powder. The Stokes shift from the lowest 3d crystal-field absorption peak is at least 0.6 eV. The temperature dependences of the emission peak energy, the integrated intensity and the decay curve of the photoluminescence are measured at various temperatures from 78 to 200 K. The results are interpreted qualitatively by a model in which the emission originates from the impurity- and defect-perturbed Mn2+ excitons by taking into account the spin ordering of Mn2+ ions.Keywords
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