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

doi:10.1063/1.1431694

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

Optical Sciences, College of

Research output: Contribution to journal › Article › peer-review

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 language	English (US)
Pages (from-to)	282-284
Number of pages	3
Journal	Applied Physics Letters
Volume	80
Issue number	2
DOIs	https://doi.org/10.1063/1.1431694
State	Published - Jan 14 2002

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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

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.",

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T1 - Surface magnetic anisotropy of Co(0001) and effects of ultrathin Cu overlayers studied by in situ spin-wave Brillouin light scattering

AU - Hyomi, Kyoko

AU - Murayama, Akihiro

AU - Oka, Yasuo

AU - Hiller, Uli

AU - Falco, Charles M.

PY - 2002/1/14

Y1 - 2002/1/14

N2 - 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.

AB - 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.

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