Puzzling magneto-optical properties of ZnMnO films
arXiv:1107.5173 · doi:10.1016/j.optmat.2010.01.034
Abstract
Optical and magneto-optical properties of ZnMnO films grown at low temperature by Atomic Layer Deposition are discussed. A strong polarization of excitonic photoluminescence is reported, surprisingly observed without splitting or spectral shift of excitonic transitions. Present results suggest possibility of Mn recharging in ZnO lattice. Strong absorption, with onset at about 2.1 eV, is related to Mn 2+ to 3+ photo-ionization. We propose that the observed strong circular polarization of excitonic emission is of a similar character as the one observed by us for ZnSe:Cr.
arXiv comment19 pages, 4 figures, 38 references
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Cited by in corpus (7)
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- Influence of s,p-d and s-p exchange couplings on exciton splitting in (Zn,Mn)O
- ZnO, ZnMnO and ZnCoO films grown by atomic layer deposition
- Effects related to deposition temperature of ZnCoO films grown by Atomic Layer Deposition - uniformity of Co distribution, structural, optical, electrical and magnetic properties
- Metastability of Mn in ZnO driven by strong (Mn) intrashell Coulomb repulsion: experiment and theory
- Role of interface in ferromagnetism of (Zn,Co)O films
- Optical and magnetic properties of ZnCoO layers