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 32.38: Poster

Freitag, 29. Februar 2008, 11:15–14:00, Poster E

Temperature dependent fast switching of magnetic nanoparticles — •Alexander Sukhov^1,2 and Jamal Berakdar² — ¹Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle/Saale, Deutschland — ²Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, Heinrich-Damerow-Straße 4, D-06120 Halle/Saale, Deutschland

We study the temperature-dependent spin dynamics of single-domain magnetic nanoparticles in the presence of a time-dependent magnetic field [1, 2] and/or spin-polarized currents [3, 4]. Our aim is to determine the conditions under which a fast magnetization switching is achievable with weak external drivings. Our work is based on the numerical and analytical solutions of the Landau-Lifshitz-Gilbert equation with temperature effects being implemented on the level of the Langevin dynamics.
C. Thirion et al., Nat. Mater. 2, 524-527 (2003).
A. Sukhov, J. Berakdar, Phys. Rev. B, submitted.
J. C. Slonczewski, J. Magn. Magn. Mater. 159, L1-L7 (1996).
L. Berger, Phys. Rev. B 54, 9353-9358 (1996).