C07 – Interaction of spin-currents with magnetic domain walls

Funding period: 2008 – 2011

Principal investigators: Mathias Kläui, Peter Nielaba

Scientific staff: Christine Schieback, Denise Hinzke

By computer simulation methods we plan to investigate the effects of finite system sizes and confining geometry on the spin structure and stability of magnetic domain-wall types as well as the effect of spin-transfer torque on the domain wall motion in such systems by spin-polarized and pure spin-current injection. Our project is closely related to the experimental project C06. Our model goes beyond the standard micromagnetic approach by using a Heisenberg Hamiltonian and additional adiabatic and non-adiabatic terms to account for the spin currents. Temperature effects are included by Gaussian random fields in the Landau-Lifshitz-Gilbert equation.

For further information please also refer to the group websites: AG Kläui, LS Nielaba.

List of publications

2010

  • M. Eltschka, M. Wötzel, J. Rhenius, S. Krzyk, U. Nowak, and M. Kläui, Nonadiabatic spin transfer torque investigated using thermally activated magnetic domain wall dynamics, Phys. Rev. Lett. 105, 056601 (2010)

2009

  • C. Schieback, D. Hinzke, M. Kläui, U. Nowak, and P. Nielaba, Temperature dependence of the current- induced domain wall motion from a modified Landau-Lifshitz-Bloch equation, Phys. Rev. B 80, 214403 (2009)
  • C. Schieback, F. Bürzle, K. Franzrahe, J. Neder, M. Dreher, P. Henseler, D. Mutter, N. Schwierz, P. Nielaba, Computer Simulations of Complex Many-Body Systems, in: High Performance Computing in Science and Engineering ’08, edited by W. E. Nagel, D. Kröner, M. M. Resch, Springer Verlag (2009)

2007

  • C. Schieback, M. Kläui, U. Nowak, U. Rüdiger, P. Nielaba, Numerical investigation of spin-torque using the Heisenberg model, Eur. Phys. J. B 59 , 429 (2007)
  • D. Backes, C. Schieback, M. Kläui, F. Junginger, H. Ehrke, P. Nielaba , U. Rüdiger, L. J. Heydermann, C. S. Chen, T. Kasama, R. E. Dunin-Borkowski, C. A. F. Vaz, and J. A. C. Bland, Transverse domain walls in nanoconstrictions, Appl. Phys. Lett. 91, 112502 (2007)