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Temperature Dependence of Antiferromagnetic Interlayer Exchange Coupling in EuS--PbS Multilayers |
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M. Chernyshova
a
, L. Kowalczyk
a
, M. Baran
a
, A. Szczerbakow
a
, T. Story
a
, C.J.P. Smits
b
, A.T. Filip
b
, H.J.M. Swagten
b
, W.J.M. de Jonge
b
and A.Yu. Sipatov
c
a Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland b Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven, The Netherlands c National Technical University KPI, 21 Frunze Str., 61002 Kharkov, Ukraine |
| Full Text PDF |
| Antiferromagnetic interlayer exchange coupling in semiconductor EuS--PbS--EuS ferromagnetic trilayers grown on PbS (001) substrates with ultrathin (0.6--1.2nm) nonmagnetic PbS spacers is studied by SQUID magnetometry and model calculations. Analysis of the experimentally observed magnetic field and temperature dependence of the magnetization of EuS--PbS structures reveals a rapid decrease in the interlayer coupling energy with increasing temperature indicating a temperature dependence of the microscopic coupling mechanism acting in these all-semiconductor ferromagnetic/ nonmagnetic multilayers. |
| PACS numbers: 75.20.Ck, 75.30.Et |