Influence of the winding number on field- and current driven dynamics of magnetic vortices and antivortices

Link:
Autor/in:
Erscheinungsjahr:
2012
Medientyp:
Text
Schlagworte:
  • Vortex flow
  • Magnetism
  • Magnetic vortex
  • Magnetic Anisotropy
  • Magnetization
  • Vortex flow
  • Magnetism
  • Magnetic vortex
  • Magnetic Anisotropy
  • Magnetization
Beschreibung:
  • The excitation of magnetic singularities in ferromagnetic thin films by radio frequency currents and fields is of high technological interest. Theoretical and experimental work often focuses on the dynamics of vortices and not on antivortices as their topological counterparts with inverted winding number of the domain structure. A comprehensive analytical description is presented for vortices and antivortices excited by spatial homogeneous two-dimensional in-plane currents and fields. In particular, the case of rotational excitation is investigated that is known to exhibit an efficient and selective coupling to the intrinsic gyrotropic eigenmode but here shows a crucial dependence on the winding number. The analytical model is compared with numerical results obtained by micromagnetic simulations. © 2012 American Institute of Physics.
Lizenz:
  • info:eu-repo/semantics/restrictedAccess
Quellsystem:
Forschungsinformationssystem der UHH
Interne Metadaten
Quelldatensatz
oai:www.edit.fis.uni-hamburg.de:publications/4ecfc302-16d3-48be-93f3-a18343f594db