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Magnetic interactions in EuTe epitaxial layers and EuTe/PbTe superlattices

Autor: Kepa, H., Springholz, G., Giebultowicz, T. M., Goldman, K. I., Majkrzak, C. F., Kacman, P., Blinowski, J., Holl, S., Krenn, H., Bauer, G.

The magnetic properties of antiferromagnetic (AFM) EuTe epitaxial layers and short period EuTe/PbTe superlattices (SLs), grown by molecular beam epitaxy on (111) BaF$_2$ substrates, were studied by magnetization and neutron diffraction measurements.

Externí odkaz: http://arxiv.org/abs/cond-mat/0302363

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Spin interactions of interstitial Mn ions in ferromagnetic GaMnAs

Autor: Blinowski, J., Kacman, P.

The recently reported Rutherford backscattering and particle-induced X-ray emission experiments have revealed that in low-temperature MBE grown GaMnAs a significant part of the incorporated Mn atoms occupies tetrahedral interstitial sites in the latt

Externí odkaz: http://arxiv.org/abs/cond-mat/0212093

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Interlayer Exchange Coupling in Semiconductor Magnetic/Nonmagnetic Superlattices

Autor: Kacman, P., Blinowski, J., Kepa, H., Giebultowicz, T. M.

Publikováno v: Physics of Semiconductor Devices, Vol.1, p.982, eds V. Kumar, P.K. Basu (Allied Publishers Ltd., 2002)

The interlayer spin correlations in the magnetic/non-magnetic semiconductor superlattices are reviewed. The experimental evidences of interlayer exchange coupling in different all-semiconductor structures, based on neutronographic and magnetic studie

Externí odkaz: http://arxiv.org/abs/cond-mat/0202377

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Kinetic exchange vs. room temperature ferromagnetism in diluted magnetic semiconductors

Autor: Blinowski, J., Kacman, P., Dietl, T.

Publikováno v: Mat. Res. Soc. Symp. Proc. Vol. 690, F6.9 (eds. T.J. Klemmer, J.Z. Sun, A. Fert, MRS 2002)

Guided by the internal-reference rule and the known band offsets in III-V and II-VI diluted magnetic semiconductors, we discuss the feasibility of obtaining p-type conductivity, required for the carrier-induced ferromagnetism, as well as the cases fo

Externí odkaz: http://arxiv.org/abs/cond-mat/0201012

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Antiferromagnetic Interlayer Coupling in Ferromagnetic Semiconductor EuS/PbS(001) Superlattices

Autor: Kepa, H., Kutner-Pielaszek, J., Blinowski, J., Twardowski, A., Majkrzak, C. F., Story, T., Kacman, P., Galazka, R. R., Ha, K., Swagten, H. J. M., de Jonge, W. J. M., Sipatov, A. Yu., Volobuev, V., Giebultowicz, T. M.

Antiferromagnetic coupling between ferromagnetic layers has been observed for the first time in all-semiconductor superlattice structure EuS/PbS(001), by neutron scattering and magnetization measurements. Spin-dependent superlattice band structure ef

Externí odkaz: http://arxiv.org/abs/cond-mat/0102194

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Interlayer Exchange Coupling Mediated by Valence Band Electrons

Autor: Blinowski, J., Kacman, P.

The interlayer exchange coupling mediated by valence band electrons in all-semiconductor IV-VI magnetic/nonmagnetic superlattices is studied theoretically. A 3D tight-binding model, accounting for the band and magnetic structure of the constituent su

Externí odkaz: http://arxiv.org/abs/cond-mat/0011135

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