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Proceedings Paper

Two-dimensional exciton magnetic polaron dynamics in thin CdTe/(Cd,Mn)Te quantum wells
Author(s): Kirill V. Kavokin; Alexey V. Kavokin; Igor N. Uraltsev; Dmitrii R. Yakovlev; Gottfried Landwehr; A. Pohlmann
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Paper Abstract

Dynamics of the two-dimensional exciton magnetic polaron (EMP) formation in thin CdTe/Cd0.79Mn0.21Te quantum wells is analyzed on the base of solving the non- stationary Schroedinger equation with the time dependent exchange potential and measured by time-resolved spectroscopy. The magnetic polaron formation time is found to enhance dramatically with an increase of the QW width, Lz, to exceed the exciton life-time at Lz > 10 angstroms and to suppress the observed polaron energy shift at Lz > 25 angstroms. Analyzing the effect of the initial exciton localization due to Lz fluctuations on the magnetic polaron formation we conclude that EMP can be considered as quasi-free. The EMP formation is shown to be governed by the in-plane exciton magnetic autolocalization.

Paper Details

Date Published: 3 September 1992
PDF: 10 pages
Proc. SPIE 1675, Quantum Well and Superlattice Physics IV, (3 September 1992); doi: 10.1117/12.137629
Show Author Affiliations
Kirill V. Kavokin, A.F. Ioffe Physico-Technical Institute (Russia)
Alexey V. Kavokin, A.F. Ioffe Physico-Technical Institute (Russia)
Igor N. Uraltsev, A.F. Ioffe Physico-Technical Institute (Russia)
Dmitrii R. Yakovlev, Univ. Wuerzburg (Germany)
Gottfried Landwehr, Univ. Wuerzburg (Germany)
A. Pohlmann, Philipps Univ. (Germany)

Published in SPIE Proceedings Vol. 1675:
Quantum Well and Superlattice Physics IV
Gottfried H. Doehler; Emil S. Koteles, Editor(s)

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