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Dynamic dipolar cross-over in EuO |
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| Authors: | J Kötzler W Scheithe R Blickhan E Kaldis |
| Institution: | Institut für Festkörperphysik, Fachgebiet Technische Physik der Technische Hochschule Darmstadt, D 6100 Darmstadt, Federal Republic of Germany;Laboratorium für Festkörperphysik, ETH Zürich, Hönggerberg, 8049 Zürich, Switzerland |
| Abstract: | From magnetic relaxation and resonance spectra the kinetic (Onsager) coefficient of the homogeneous magnetization is derived. Its critical behaviour in the dipolar regime and the cross-over to the exchange regime above Tc agrees quantitively with recent mode-coupling calculations. The relevance of these results for line-widths of inelastic neutron scattering is pointed out. |
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