Circumstantial evidence for hydrogen-induced surface magnetism on Pd(110)

The surface of clean and hydrogen-covered Pd(110) was investigated by angle-resolved photoemission spectroscopy. At a coverage of 1.5 ML, where the surface adapts a pairing-row reconstruction, the spectra show a peculiar peak splitting of the S -surface resonance. The band dispersion of this satelli...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2012-03, Vol.85 (9), Article 094428
Main Authors: Amann, P., Cordin, M., Redinger, J., Stolwijk, S. D., Zumbrägel, K., Donath, M., Bertel, E., Menzel, A.
Format: Article
Language:English
Subjects:
Banded structure
Condensed matter
Dispersions
Exchange
Magnetic resonance
Magnetism
Spectra
Splitting
Surface chemistry
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Summary:The surface of clean and hydrogen-covered Pd(110) was investigated by angle-resolved photoemission spectroscopy. At a coverage of 1.5 ML, where the surface adapts a pairing-row reconstruction, the spectra show a peculiar peak splitting of the S -surface resonance. The band dispersion of this satellite is parallel to the dispersion of the main resonance but shifted by 400 meV at T = 100 K. An interpretation in terms of magnetic exchange splitting is supported by the appearance of a kink structure of the photoemission data around 350 meV binding energy. This unexpected behavior for H adsorption is attributed to the reduced coordination of the Pd atoms at the surface.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.85.094428