First observation and experimental proof of free magnetic polaron formation in CdTe/(Cd, Mn)Te quantum wells

We report the first experimental observation of free magnetic polarons in diluted magnetic semiconductor quantum wells. CdTe/Cd 0.78Mn0.22Te multiple quantum well structures with quantum well widths up to 100 Å were investigated by reflection, photoluminescence and photoluminescence excitation spect...

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Veröffentlicht in:	Solid state communications 1990-10, Vol.76 (3), p.325-329
Hauptverfasser:	Yakovlev, D.R., Ossau, W., Landwehr, G., Bicknell-Tassius, R.N., Waag, A., Uraltsev, I.N.
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Exact sciences and technology Physics Surface and interface electron states
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	We report the first experimental observation of free magnetic polarons in diluted magnetic semiconductor quantum wells. CdTe/Cd 0.78Mn0.22Te multiple quantum well structures with quantum well widths up to 100 Å were investigated by reflection, photoluminescence and photoluminescence excitation spectroscopy at low temperatures and in magnetic fields. Free and bound magnetic polaron energies were determined by the suppression of polaron formation with increasing temperature and in external magnetic fields.
ISSN:	0038-1098 1879-2766
DOI:	10.1016/0038-1098(90)90847-5