Angle-resolved photoemission study of Co nanostructures on vicinal Au(1 1 1) surfaces

H. Fujisawa; S. Shiraki; M. Nantoh; Maki Kawai

doi:10.1016/j.apsusc.2004.06.067

Angle-resolved photoemission study of Co nanostructures on vicinal Au(1 1 1) surfaces

H. Fujisawa, S. Shiraki, M. Nantoh, Maki Kawai

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

1 Citation (Scopus)

Abstract

The electronic structure of nanostructured Co adatoms grown by step decoration of a vicinal Au(1 1 1) surface has been investigated by angle-resolved photoemission spectroscopy (ARPES). With increased Co coverage, the intensity of Au 5d valence bands decreases but their peak positions do not change, suggesting that the mixing between Au 5d and Co 3d bands is negligibly weak. The coverage dependence of ARPES spectra near the Fermi level for Co was compared with bulk photoemission results. At the coverage of 1.28 ML Co, the observed Co 3d bands were identified as the exchange splittings between 3d bands with the similar energy value to the bulk. 1

Original language	English
Pages (from-to)	291-295
Number of pages	5
Journal	Applied Surface Science
Volume	237
Issue number	1-4
DOIs	https://doi.org/10.1016/j.apsusc.2004.06.067
Publication status	Published - 2004 Oct 15

Keywords

Angle-resolved photoemission
Cobalt
Gold
Self-assembly
Vicinal single crystal surface

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

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title = "Angle-resolved photoemission study of Co nanostructures on vicinal Au(1 1 1) surfaces",

abstract = "The electronic structure of nanostructured Co adatoms grown by step decoration of a vicinal Au(1 1 1) surface has been investigated by angle-resolved photoemission spectroscopy (ARPES). With increased Co coverage, the intensity of Au 5d valence bands decreases but their peak positions do not change, suggesting that the mixing between Au 5d and Co 3d bands is negligibly weak. The coverage dependence of ARPES spectra near the Fermi level for Co was compared with bulk photoemission results. At the coverage of 1.28 ML Co, the observed Co 3d bands were identified as the exchange splittings between 3d bands with the similar energy value to the bulk. 1",

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T1 - Angle-resolved photoemission study of Co nanostructures on vicinal Au(1 1 1) surfaces

AU - Fujisawa, H.

AU - Shiraki, S.

AU - Nantoh, M.

AU - Kawai, Maki

PY - 2004/10/15

Y1 - 2004/10/15

N2 - The electronic structure of nanostructured Co adatoms grown by step decoration of a vicinal Au(1 1 1) surface has been investigated by angle-resolved photoemission spectroscopy (ARPES). With increased Co coverage, the intensity of Au 5d valence bands decreases but their peak positions do not change, suggesting that the mixing between Au 5d and Co 3d bands is negligibly weak. The coverage dependence of ARPES spectra near the Fermi level for Co was compared with bulk photoemission results. At the coverage of 1.28 ML Co, the observed Co 3d bands were identified as the exchange splittings between 3d bands with the similar energy value to the bulk. 1

AB - The electronic structure of nanostructured Co adatoms grown by step decoration of a vicinal Au(1 1 1) surface has been investigated by angle-resolved photoemission spectroscopy (ARPES). With increased Co coverage, the intensity of Au 5d valence bands decreases but their peak positions do not change, suggesting that the mixing between Au 5d and Co 3d bands is negligibly weak. The coverage dependence of ARPES spectra near the Fermi level for Co was compared with bulk photoemission results. At the coverage of 1.28 ML Co, the observed Co 3d bands were identified as the exchange splittings between 3d bands with the similar energy value to the bulk. 1

KW - Angle-resolved photoemission

KW - Cobalt

KW - Gold

KW - Self-assembly

KW - Vicinal single crystal surface

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