Short-Period GaMnAs/GaAs Superlattices: Optical and Magnetic Characterization

被引：0
|
作者：
W. Szuszkiewicz
E. Dynowska
F. Ott
B. Hennion
M. Jouanne
J. F. Morhange
J. Sadowski
机构：
[1] Polish Academy of Sciences,Institute of Physics
[2] Al. Lotników 32/46,Oersted Laboratory, Niels Bohr Institute
[3] Laboratoire Léon Brillouin UMR12,MAX
[4] CEA-CNRS,Lab
[5] CE Saclay,undefined
[6] Laboratoire des Milieux Désordonnés et Hétérogènes UPMC,undefined
[7] BP 86,undefined
[8] 4 place Jussieu,undefined
[9] University of Copenhagen,undefined
[10] Lund University,undefined
来源：
Journal of Superconductivity | 2003年 / 16卷
关键词：
ferromagnetic semiconductor; neutron scattering; interlayer exchange coupling; Raman scattering; folded acoustic phonons;
D O I：
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学科分类号：
摘要：
Superlattices with magnetic layers containing from 8 to 16 GaMnAs monolayers corresponding to the mixed crystal composition between 5 and 6% of Mn and from 4 to 10 GaAs monolayers were grown by the low temperature MBE technique and characterized by Raman scattering. Folded acoustic phonons were observed for all superlattices in the Raman scattering spectra. The interlayer exchange coupling, found previously by the wide-angle neutron diffraction in selected superlattices was investigated by the spin-polarized neutron reflectometry. It was always of ferromagnetic type, no trace of antiferromagnetic coupling was found.
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页码：209 / 212
页数：3
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