Surface structure determination of Pd ultrathin films on Ru(0001): Possible magnetic behavior

Journal Article · Wed Aug 15 04:00:00 EDT 2007 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.76.075432· OSTI ID:21055135

Siervo, A de; De Biasi, E; Garcia, F ^[1]; Landers, R ^[1]; Martins, M D; Macedo, W A. A. ^[2]

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1. Laboratorio Nacional de Luz Sincrotron, 13084-971 Campinas (Brazil)
2. Laboratorio de Fisica Aplicada, Centro de Desenvolvimento da Tecnologia Nuclear, 31270-901 Belo Horizonte (Brazil)

Nowadays, ultrathin films play a fundamental role in modern materials science and technology. Recently, several theoretical works indicate that the magnetic properties of Pd ultrathin films could be controlled by structural parameters of the film, and much work has been done to study induced magnetic properties of ultrathin Pd films grown on different substrates. For the epitaxy of Pd monolayers on Ru(0001), it was not clear if Pd grows in an hcp or fcc structure and a detailed surface structure determination was not available for this system. In this study, Pd films with thicknesses ranging from submonolayer up to approximately 15 ML were grown on a Ru(0001) single crystal substrate under UHV conditions, and the electronic structure, surface crystallography, and magnetism were investigated by multiple (experimental and theoretical) techniques: x-ray photoelectron spectroscopy and diffraction using conventional Mg K{alpha} and synchrotron radiation sources, low- and high-energy electron diffraction, magneto-optical Kerr effect measurements, and density-functional theory calculations. The electronic structure, surface crystallography, and magnetism of the Pd films are discussed in detail.

• OSTI ID: 21055135
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 7 Vol. 76; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTALLOGRAPHY
DENSITY FUNCTIONAL METHOD
ELECTRON DIFFRACTION
ELECTRONIC STRUCTURE
EPITAXY
FCC LATTICES
HCP LATTICES
KERR EFFECT
MAGNETIC PROPERTIES
MAGNETISM
MAGNETO-OPTICAL EFFECTS
MONOCRYSTALS
PALLADIUM
SUBSTRATES
SURFACES
SYNCHROTRON RADIATION SOURCES
THICKNESS
THIN FILMS
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY