Surface magnetic anisotropy of Co(0001) and effects of ultrathin Cu overlayers studied by in situ spin-wave Brillouin light scattering

Kyoko Hyomi, Akihiro Murayama, Yasuo Oka, Uli Hiller, Charles M. Falco

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

We have developed an in situ spin-wave Brillouin light scattering system, for the study of surface magnetic anisotropies under an ultrahigh vacuum. The surface uniaxial anisotropy constant is determined as -1.1mJ/m2 for a bare surface of Co(0001), indicating a strong in-plane anisotropy. With only 0.5 monolayer (ML) of Cu deposited on, the strong perpendicular anisotropy is induced, which is followed by an intensity peak at 1 ML of the Cu. We attribute these results to a steep change in the surface electronic state due to the Cu-atom deposition.

Original languageEnglish (US)
Pages (from-to)282-284
Number of pages3
JournalApplied Physics Letters
Volume80
Issue number2
DOIs
StatePublished - Jan 14 2002

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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