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MA: Magnetismus

MA 20: Poster: Films(1-36) Transp(37-56) Ex.Bias(57-67) Spindyn(68-80) Micromag(81-95) Particle(96-109) Imag.+Surface(110-113) Spinelectr(114-122) Theory+Micromag(123-131) Spinstr+Aniso(132-142) MagMat(143-156) Meas(157,158) MolMag+Kondo(159-162) Postdead(163-)

MA 20.128: Poster

Dienstag, 28. März 2006, 15:15–19:15, P1

Simulations of spin structures in nano-structures with lateral constrictions — •Chr. Kircher¹, U. Nowak², M. Kläui¹, U. Rüdiger¹, H. Ehrke¹, D. Backes^1,3, L. J. Heydermann³, R. E. Dunin-Borkowski⁴, and P. Nielaba¹ — ¹Department of Physics, University of Konstanz, 78457 Konstanz, Germany — ²Department of Physics, University of York, York YO10 5DD, UK — ³Laboratory for Micro- and Nanotechnology, Paul Scherrer Institut, CH-5232 Villingen PSI, Switzerland — ⁴Department of Material Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ, UK

In magnetic nano-structures many novel physical effects occur when reducing the spatial system size. The spin structure of geometrically confined domain walls can be controlled by the lateral dimensions [1].

To study systematically the influence of lateral dimensions on the spin structure of domain walls, computer simulations on a classical spin model were performed for ferromagnetic nano-structures with lateral constrictions. Thermal activations of the system were taken into account by the numerical solution of the Landau-Lifshitz-Gilbert equation with Langevin dynamics.

Acknowledgements: Work supported by the Landesstiftung Baden-Württemberg

[1] M. Kläui et al. APL 87, 102509 (2005)