Berlin 2008 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 32: Postersession II: Spinstruct./Phase Trans. (1-10); Spinelectronics (11-15); Thin Films (16 - 36); Particles/Clusters (37-45); Multiferroics (46-54); Spindynamics/Spin Torque (55 - 76); Post Deadlines (77-79)
MA 32.60: Poster
Freitag, 29. Februar 2008, 11:15–14:00, Poster E
Spin dynamics in permalloy antidot lattices: Experiment and simulation — •Sebastian Neusser1, Bernhard Botters1, Jesko Topp2, Jan Podbielski2, Detlef Heitmann2, and Dirk Grundler1 — 1Fakultaet fuer Physik E10, Technische Universitaet Muenchen, D-85748 Garching, Germany — 2Institut fuer angewandte Physik, Universitaet Hamburg, Jungiusstr. 11, D-20355 Hamburg, Germany
Spin wave modes in a submicron antidot lattice structured into a polycrystalline Ni80Fe20 thin film are being investigated with both a broadband ferromagnetic resonance (FMR) technique in a coplanar waveguide setup [1] and time-dependent micromagnetic simulations. Comparison between experiment and simulations allows us to correlate FMR absorption lines with the spatio-temporal evolution of spin dynamics and magnon interference phenomena [1]. In our study we focus on the expected magnon mode splitting [2] in a periodic lattice. The authors thank the DFG for financial support via SFB668 and the "Nanosystems Initiative Munich (NIM)" funded within the German Excellence Initiative.
[1]J. Podbielski, F. Giesen, and D. Grundler, Phys. Rev. Lett. 96, 167207 (2006)
[2]J. Podbielski, D. Heitmann, and D. Grundler, unpublished.