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Proceedings Paper

Magnetoreflectance study of interfaces in Cd1-xMnxTe/CdTe/Cd1-xMnxTe structures
Author(s): V. G. Abramishvili; A. V. Komarov; S. M. Ryabchenko; V. I. Sugakov; A. V. Vertsimakha
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Paper Abstract

Magneto-reflectivity spectra are studied to determine giant spin splitting (GSS) of the excitonic transitions in a set of quantum wells Cd1-xMnxTe/CdTe/Cd1-xMnxTe of different widths. Paramagnetic enhancement of the excitonic state GSS in the quantum wells is observed. Corrections to the GSS in the quantum well due to both a) reduction of the number of nearest neighboring magnetic ions with strong antiferromagnetic coupling at the CdTe/Cd1-xMnxTe interfaces and b) mixing of materials of CdTe and Cd1-xTe in the interface region are calculated. It is shown that relative role of the paramagnetic enhancement increases as the quantum well width rises. It is noted that paramagnetic enhancement results from the weakening of two factors of the antiferromagnetic Mn-Mn coupling in the semicmagnetic semiconductors which usually tend to decrease GSS. Those factors are excluding of the part of magnetic ions contribution to the magnetization due to the antiferromagnetic coupling and account for the effective temperature of the magnetic ion subsystem.

Paper Details

Date Published: 26 August 1997
PDF: 4 pages
Proc. SPIE 3182, Material Science and Material Properties for Infrared Optoelectronics, (26 August 1997); doi: 10.1117/12.280468
Show Author Affiliations
V. G. Abramishvili, Institute of Physics (Ukraine)
A. V. Komarov, Institute of Physics (Ukraine)
S. M. Ryabchenko, Institute of Physics (Ukraine)
V. I. Sugakov, Institute for Nuclear Research (Ukraine)
A. V. Vertsimakha, Institute for Nuclear Research (Ukraine)

Published in SPIE Proceedings Vol. 3182:
Material Science and Material Properties for Infrared Optoelectronics
Fiodor F. Sizov; Vladimir V. Tetyorkin, Editor(s)

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