Optical Properties of GaSe Crystals Containing Mn Impurity Atoms. II. Excitonic and Impurity Emission | Zendy

Gnatenko Yu. P. | Zendy; Zhirko Yu. I. | Zendy; Kovalyuk Z. D. | Zendy

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Optical Properties of GaSe Crystals Containing Mn Impurity Atoms. II. Excitonic and Impurity Emission

Author(s) -

Gnatenko Yu. P.,

Zhirko Yu. I.,

Kovalyuk Z. D.

Publication year - 1990

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.2221610143

Subject(s) - impurity , exciton , polaron , antiferromagnetism , condensed matter physics , photoluminescence , ion , phonon , materials science , electron , magnetic moment , atomic physics , physics , optoelectronics , quantum mechanics

The impurity band ( E max = 1.842 eV) observed in photoluminescence (PL) spectra of GaSe: Mn crystals is demonstrated to be due to intracentre transitions of the Mn 2+ ion. The energy of a zero‐phonon transition ( E ZPL = 1.928 eV) and of optical phonons participating in the formation of the PL of the electronic‐vibrational band is determined. Emission of excitonic polarons — ferronic states, resulting from a spin polarization of the electron and hole, included in the exciton, and of local antiferromagnetic‐ordered magnetic moments of Mn 2+ ions is observed at T < 20 K.

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