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2. Interlayer spin coherence in antiferromagnetic EuTe/PbTe superlattices observed by polarized neutron diffraction

Author

Nunez, V., Majkrzak, C.F., Springholz, G., Bauer, G., Giebultowicz, T.M., Kepa, H., and Goldman, K.I.

Abstract

Neutron diffraction experiments on short-period EuTe/PbTe superlattices with a [111] growth axis reveal distinct magnetic correlations between the EuTe layers across up to 55 Â of non-magnetic PbTe spacers, even though EuTe is antiferromagnetic and there are not enough carriers to support RKKY interactions. With increasing in-plane external magnetic field we observe a decrease of the antiferromagnetic interlayer interactions. This decrease depends very strongly on whether the superlattices are cooled down through the Néel point in zero or non-zero field.

Published
1998
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