Studies of Interlayer Magnetic Coupling in All-Semiconductor Superlattices by Means of Neutron Scattering Techniques
H. Kępaa,b and T.M. Giebultowiczb,a
aInstitute of Experimental Physics, Warsaw University Hoża 69, 00-681 Warszawa, Poland
bPhysics Department, Oregon State University, Corvallis, OR 97331, USA
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An overview of neutron scattering studies of ferromagnetic and antiferromagnetic all-semiconductor superlattices is presented. Diffraction experiments on MnTe/CdTe, MnTe/ZnTe and EuTe/PbTe superlattices show pronounced correlations between the MnTe and EuTe layers across the non-magnetic spacers, even though these layers are antiferromagnetic and the systems are nearly-insulating. Current theory status of these systems is discussed. Diffractometry and reflectometry data from EuS/PbS superlattices reveal pronounced antiferromagnetic coupling between the ferromagnetic EuS block. First polarized neutron reflectometry data from superlattices prepared of a novel ferromagnetic "spintronics" material, Ga(Mn)As, are also presented.
DOI: 10.12693/APhysPolA.102.21
PACS numbers: 75.25.+z, 75.50.Pp, 75.75.+a