Berlin 2008 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 16: Magnetic Particles and Clusters I

MA 16.10: Vortrag

Dienstag, 26. Februar 2008, 12:45–13:00, H 1028

Magnetic anisotropy and Dzyaloshinski-Moriya type coupling in small magnetic clusters — •Sergiy Mankovsky, Sven Bornemann, Jan Minar, and Hubert Ebert — Dept. Chemie und Biochemie/Phys. Chemie, LMU München, Butenandtstr. 11, D-81377 München, Deutschland

The results of a theoretical study of relativistic influences on the exchange coupling of small magnetic clusters will be presented. The use of the torque method allowed to investigate the magnetic anisotropy and angular dependence of the exchange coupling in detail and to determine the contribution of the Dzyaloshinski-Moriya-type coupling. Results will be presented for Fe and Co clusters deposited on Pt(111) surface, that have been investigated by means of the fully relativistic TB-KKR Green’s function method within the framework of spin-density functional theory. The data are analysed concerning their relation to the electronic structure and symmetry of the clusters. The influence of the substrate will be discussed as well.