Interface electronic complexes and landau damping of magnons in ultrathin magnets

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Autor/in:
Verlag/Körperschaft:
American Physical Society
Erscheinungsjahr:
2011
Medientyp:
Text
Schlagworte:
  • 500: Naturwissenschaften
  • ddc:500
Beschreibung:
  • The damping of magnons in ultrathin metallic magnets is studied from first-principles. We contrast Fe/Cu(100) and Fe/W(110) systems for which the influence of the substrate on the magnon life time differs strongly. We introduce the concept of Landau map in momentum space to assess the role of different electronic states in the attenuation. The formation of electronic complexes localized at the film-substrate interface leads to hot spots in the Landau maps and enhances the damping. This finding allows tuning the attenuation of high-frequency magnetization dynamics in nanostructures. © 2011 American Physical Society.
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ReposIt

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oai:reposit.haw-hamburg.de:20.500.12738/11170