| Collective Excitations in Heisenberg Ultrathin Films with Inhomogeneous Spatial Distribution of Magnetisation |
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R. Łosiński and Z. Onyszkiewicz Magnetism Theory Division, Faculty of Physics A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland |
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| Received: July 7, 2000; in final form August 28, 2000 |
| The influence of non-magnetic substrate on the collective excitation of the Heisenberg (s=1/2) ferromagnetic ultrathin films with homogeneous and inhomogeneous spatial distribution of magnetization is investigated. It has been proved that the collective excitation spectrum of ultrathin film may, to a significant degree, depend on the value of the coefficient characterizing the film coupling with its substrate. |
| DOI: 10.12693/APhysPolA.98.419 PACS numbers: 75.10.Jm, 75.70.-i |