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The Enrgy Transfer between Free Excitons, Bound Excitons, and the 3d‐Shell of Mn 2+ in Zn 1− x Se Mixed Crystals and the s–d Type Exchange Interaction
Author(s) -
Stutnbäumer U.,
Gumlich H. E.,
Zuber H.
Publication year - 1989
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221560219
Subject(s) - exciton , luminescence , excitation , atomic physics , spectroscopy , chemistry , crystal (programming language) , manganese , spectral line , emission spectrum , crystallography , analytical chemistry (journal) , condensed matter physics , physics , optics , organic chemistry , chromatography , quantum mechanics , astronomy , computer science , programming language
Excitation spectra of the Mn 2+ emission band 4 T 1 → 6 A 1 of Zn 1− x Mn x Se and their dependence on the crystal temperature and the manganese concentration ( x ≦ 0.016) gives evidenve of an excitonic energy transfer from free and bound excitons to the 3d‐shell of Mn 2+ . Reflection spectra and the comparison of excitation maxima of free and bound excitons reveal some steps of the transfr of excitonic energy to the luminescence centre Mn 2+ in Zn 1− x Mn x Se. The full spinsplitting of bound excitons which is not determined by former luminescence experiments is observed (up to 90 meV at B = 5 T) in excitation spectroscopy of the Mn 2+ emission band and the s–d exchange constant relation in Zn 1− x Mn x Se is determind to β/α = −5.5 ± 0.6.