%0 Book Section %1 statphys23_0505 %A Schieback, C. %A Nowak, U. %A Klaeui, M. %A Ruediger, U. %A Nielaba, P. %B Abstract Book of the XXIII IUPAP International Conference on Statistical Physics %C Genova, Italy %D 2007 %E Pietronero, Luciano %E Loreto, Vittorio %E Zapperi, Stefano %K domain heisenberg model spin statphys23 topic-3 torque wall %T Numerical investigation of geometrically confined domain walls and spin torque using the Heisenberg model %U http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=505 %X We study systematically the influence of lateral dimensions on the spin structure of domain walls. Computer simulations on a classical spin model are performed for ferromagnetic permalloy nano-structures with lateral constrictions. Thermal activations of the system are taken into account by the numerical solution of the Landau-Lifshitz-Gilbert equation with Langevin dynamics. The domain wall width is found to be strongly correlated with the constriction width. The smaller the constriction width the smaller the domain wall width. Furthermore we calculate the response of a domain wall to a current due to a spin transfer torque resulting in current-induced domain wall motion. We compute the behavior of domain walls in a one dimensional chain when currents are injected using adiabatic and non-adiabatic spin torque terms. Our results 1 are compared to analytical calculations 2 and are found to agree very well for small current density predictions. The work was supported by the Landesstiftung Baden-Wuerttemberg 1) C. Schieback et al., Europ. Phys. J. B, DOI:10.1140/epjb/e2007-00062-2 (2007)\\ 2) Z. Li, S. Zhang, Phys. Rev. B 70, 24417 (2004)

@incollection{statphys23_0505, abstract = {We study systematically the influence of lateral dimensions on the spin structure of domain walls. Computer simulations on a classical spin model are performed for ferromagnetic permalloy nano-structures with lateral constrictions. Thermal activations of the system are taken into account by the numerical solution of the Landau-Lifshitz-Gilbert equation with Langevin dynamics. The domain wall width is found to be strongly correlated with the constriction width. The smaller the constriction width the smaller the domain wall width. Furthermore we calculate the response of a domain wall to a current due to a spin transfer torque resulting in current-induced domain wall motion. We compute the behavior of domain walls in a one dimensional chain when currents are injected using adiabatic and non-adiabatic spin torque terms. Our results [1] are compared to analytical calculations [2] and are found to agree very well for small current density predictions. The work was supported by the Landesstiftung Baden-Wuerttemberg 1) C. Schieback et al., Europ. Phys. J. B, DOI:10.1140/epjb/e2007-00062-2 (2007)\\ 2) Z. Li, S. Zhang, Phys. Rev. B 70, 24417 (2004)}, added-at = {2007-06-20T10:16:09.000+0200}, address = {Genova, Italy}, author = {Schieback, C. and Nowak, U. and Klaeui, M. and Ruediger, U. and Nielaba, P.}, biburl = {https://www.bibsonomy.org/bibtex/2e823b6968f3fdfc4bad26d814aa67fe5/statphys23}, booktitle = {Abstract Book of the XXIII IUPAP International Conference on Statistical Physics}, editor = {Pietronero, Luciano and Loreto, Vittorio and Zapperi, Stefano}, interhash = {96f99e5cac00f7ea4fb815afbcc8ab11}, intrahash = {e823b6968f3fdfc4bad26d814aa67fe5}, keywords = {domain heisenberg model spin statphys23 topic-3 torque wall}, month = {9-13 July}, timestamp = {2007-06-20T10:16:22.000+0200}, title = {Numerical investigation of geometrically confined domain walls and spin torque using the Heisenberg model}, url = {http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=505}, year = 2007 }