Band structure engineering of two-dimensional magnonic vortex crystals

Link:
Autor/in:
Erscheinungsjahr:
2015
Medientyp:
Text
Schlagworte:
  • Vortex flow
  • Magnetism
  • Magnetic vortex
  • Magnetic Anisotropy
  • Magnetization
  • Vortex flow
  • Magnetism
  • Magnetic vortex
  • Magnetic Anisotropy
  • Magnetization
Beschreibung:
  • Magnonic vortex crystals are studied via scanning transmission x-raymicroscopy and ferromagnetic-resonance spectroscopy. We investigate a two-dimensional vortex crystal by imprinting waves with tunable wave vectors. The dispersion relation omega(k) is determined via ferromagnetic-resonance spectroscopy with a tunable frequency and wave vector for two vortex core polarization patterns that are adjusted by self-organized state formation prior to the measurement. We demonstrate that the band structure of the crystal is reprogrammed by tuning the vortex polarizations.
Lizenz:
  • info:eu-repo/semantics/restrictedAccess
Quellsystem:
Forschungsinformationssystem der UHH

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oai:www.edit.fis.uni-hamburg.de:publications/1ffacdb7-e6e4-4f66-bc56-2c882d657333