Determination of hydrogen atom binding sites on Ru(001) by HREELS

M. A. Barteau; J. Q. Broughton; D. Menzel

doi:10.1016/0039-6028(83)90012-2

Determination of hydrogen atom binding sites on Ru(001) by HREELS

M. A. Barteau, J. Q. Broughton, D. Menzel

Lehrstuhl für Experimentalphysik - Oberflächen- und Grenzflächenphysik

Technische Universität München

Publikation: Beitrag in Fachzeitschrift › Artikel › Begutachtung

93 Zitate (Scopus)

Abstract

High resolution electron energy loss spectra of hydrogen adsorbed on Ru(001) have been obtained. At saturation, two losses at 105 and 138 meV are found (67 and 103 meV for deuterium); the lower energy peak shifts with coverage. Measurements away from the specular direction suggest that the main loss mechanism is impact scattering. It is concluded that H on Ru(001) sits in the two types of threefold hollow sites, and the two losses are due to the symmetric out-of-plane and the asymmetric in-plane vibrations, as has been observed for H on Ni(111) and Pt(111) by other workers. The energy change of the lower loss may be caused by the difference between H in fcc and hcp sites whose relative occupation changes with coverage.

Originalsprache	Englisch
Seiten (von - bis)	443-452
Seitenumfang	10
Fachzeitschrift	Surface Science
Jahrgang	133
Ausgabenummer	2-3
DOIs	https://doi.org/10.1016/0039-6028(83)90012-2
Publikationsstatus	Veröffentlicht - 2 Okt. 1983

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10.1016/0039-6028(83)90012-2

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title = "Determination of hydrogen atom binding sites on Ru(001) by HREELS",

abstract = "High resolution electron energy loss spectra of hydrogen adsorbed on Ru(001) have been obtained. At saturation, two losses at 105 and 138 meV are found (67 and 103 meV for deuterium); the lower energy peak shifts with coverage. Measurements away from the specular direction suggest that the main loss mechanism is impact scattering. It is concluded that H on Ru(001) sits in the two types of threefold hollow sites, and the two losses are due to the symmetric out-of-plane and the asymmetric in-plane vibrations, as has been observed for H on Ni(111) and Pt(111) by other workers. The energy change of the lower loss may be caused by the difference between H in fcc and hcp sites whose relative occupation changes with coverage.",

author = "Barteau, {M. A.} and Broughton, {J. Q.} and D. Menzel",

note = "Funding Information: We thank P. Feulner for valuable advice and discussions, and H. v. Seefeld for his contributions in the construction of the spectrometere lectronics and the crystal manipulator. This work was supported by the Deutsche Forschungs-gemeinschaft through Sonderforschungsbereich 128. One of us (M.A.B.) wishes to thank the National Science Foundation for support through an NSF Postdoctoral Fellowship.",

year = "1983",

month = oct,

day = "2",

doi = "10.1016/0039-6028(83)90012-2",

language = "English",

volume = "133",

pages = "443--452",

journal = "Surface Science",

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publisher = "Elsevier B.V.",

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T1 - Determination of hydrogen atom binding sites on Ru(001) by HREELS

AU - Barteau, M. A.

AU - Broughton, J. Q.

AU - Menzel, D.

N1 - Funding Information: We thank P. Feulner for valuable advice and discussions, and H. v. Seefeld for his contributions in the construction of the spectrometere lectronics and the crystal manipulator. This work was supported by the Deutsche Forschungs-gemeinschaft through Sonderforschungsbereich 128. One of us (M.A.B.) wishes to thank the National Science Foundation for support through an NSF Postdoctoral Fellowship.

PY - 1983/10/2

Y1 - 1983/10/2

N2 - High resolution electron energy loss spectra of hydrogen adsorbed on Ru(001) have been obtained. At saturation, two losses at 105 and 138 meV are found (67 and 103 meV for deuterium); the lower energy peak shifts with coverage. Measurements away from the specular direction suggest that the main loss mechanism is impact scattering. It is concluded that H on Ru(001) sits in the two types of threefold hollow sites, and the two losses are due to the symmetric out-of-plane and the asymmetric in-plane vibrations, as has been observed for H on Ni(111) and Pt(111) by other workers. The energy change of the lower loss may be caused by the difference between H in fcc and hcp sites whose relative occupation changes with coverage.

AB - High resolution electron energy loss spectra of hydrogen adsorbed on Ru(001) have been obtained. At saturation, two losses at 105 and 138 meV are found (67 and 103 meV for deuterium); the lower energy peak shifts with coverage. Measurements away from the specular direction suggest that the main loss mechanism is impact scattering. It is concluded that H on Ru(001) sits in the two types of threefold hollow sites, and the two losses are due to the symmetric out-of-plane and the asymmetric in-plane vibrations, as has been observed for H on Ni(111) and Pt(111) by other workers. The energy change of the lower loss may be caused by the difference between H in fcc and hcp sites whose relative occupation changes with coverage.

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U2 - 10.1016/0039-6028(83)90012-2

DO - 10.1016/0039-6028(83)90012-2

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AN - SCOPUS:0001384509

SN - 0039-6028

VL - 133

SP - 443

EP - 452

JO - Surface Science

JF - Surface Science

IS - 2-3

ER -

Determination of hydrogen atom binding sites on Ru(001) by HREELS

Abstract

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