Direct observation of oscillatory behavior in the surface magnetization of Fe thin films grown on a Ni/Cu(100) film

Journal Article · Mon Nov 15 04:00:00 EST 2004 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.70.195405· OSTI ID:20662192

Amemiya, Kenta; Matsumura, Daiju; Abe, Hitoshi; Kitagawa, Soichiro; Ohta, Toshiaki; Yokoyama, Toshihiko ^[1]

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1. Department of Chemistry, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)

The surface and interface magnetic structures of Fe thin films (4-11 ML) grown on a 6 ML Ni/Cu(100) film have been directly investigated with the depth-resolved x-ray magnetic circular dichroism technique. An oscillatory behavior in the Fe surface magnetization as a function of Fe thickness is found. The spectra were analyzed with a simple magnetic model, in which only surface two layers and interface (bottom) single layer are magnetically active. The analysis clearly shows existence of an oscillatory or rotational interlayer magnetic coupling between the surface and interface of the Fe film via the inner layers with the interface magnetization essentially unchanged. Temperature dependent experiments showed that the surface magnetization vanishes with increasing temperature, while the interface one stays unchanged.

• OSTI ID: 20662192
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 19 Vol. 70; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER
COUPLING
FERROMAGNETIC MATERIALS
INTERFACES
IRON
LAYERS
MAGNETIC CIRCULAR DICHROISM
MAGNETISM
MAGNETIZATION
NICKEL
SPECTRA
SURFACES
TEMPERATURE DEPENDENCE
THIN FILMS
X RADIATION