CO Adsorption Effects on the Magnetism and Surface Structure of Fe/Cu(001)

Hitoshi Abe; Kenta Amemiya; Jun Miyawaki; Erika O. Sako; Masako Sakamaki; Daiju Matsumura; Takumi Ohtsuki; Enju Sakai; Toshiaki Ohta

doi:10.1380/ejssnt.2008.233

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CO Adsorption Effects on the Magnetism and Surface Structure of Fe/Cu(001)

Hitoshi Abe, Kenta Amemiya, Jun Miyawaki, Erika O. Sako, Masako Sakamaki, Daiju Matsumura, Takumi Ohtsuki, Enju Sakai, Toshiaki Ohta

Author information

Hitoshi Abe
Department of Chemistry, Faculty of Science and Technology, Keio University, Japan
Kenta Amemiya
Institute of Materials Structure Science, High Energy Accelerator Research Organization, Japan
Japan Science and Technology Agency, CREST, Japan
Jun Miyawaki
RIKEN Harima Institute, Japan
Erika O. Sako
Institute of Materials Structure Science, High Energy Accelerator Research Organization, Japan
Masako Sakamaki
Graduate School of Advanced Integration Science, Chiba University, Japan
Daiju Matsumura
Japan Atomic Energy Agency, Japan
Takumi Ohtsuki
Department of Chemistry, Graduate School of Science, The University of Tokyo, Japan
Enju Sakai
Department of Chemistry, Graduate School of Science, The University of Tokyo, Japan
Toshiaki Ohta
SR Center, Ritsumeikan University, Japan

Keywords: X-ray absorption spectroscopy, Iron, Carbon monoxide, Magnetic films

JOURNAL FREE ACCESS

2008 Volume 6 Pages 233-236

DOI https://doi.org/10.1380/ejssnt.2008.233

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Abstract

Effects of CO adsorption on the magnetic properties of Fe films on Cu(001) were studied at 100 K as a function of the film thickness. CO adsorption does not affect the magnetic property of 2 ML Fe film but induces the spin reorientation transition from perpendicular to in-plane magnetization for 4 ML Fe film. It also causes the apparent decrease of magnetization, which is attributed to the reduction in surface magnetization by analyses of depth-resolved XMCD spectra. The reduction of the magnetization can be originated from a reconstruction of the surface structure of the films. It was suggested that the surface structures of the 4 ML Fe film are changed to a bcc-like structure upon CO adsorption, while the structure of the 2 ML Fe film could not change by CO adsorption because its magnetization is unchanged. [DOI: 10.1380/ejssnt.2008.233]

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