Photoemission Study of Co Adsorbed on K/Cu(110). Analysis of Adsorbate Induced Structures

• Authors: P. Godowski , J. Onsgaard , S. Christensen , J. Nerlov
• Languages of publication: EN

Abstracts

EN

Improved adsorption characteristics of a K predosed Cu(110) surface with a coverage corresponding to a point before the work function minimum have been confirmed. Analysis of the CO-induced orbitals in the photoelectron spectra of the CO/K/Cu(110) interface for low coverages of carbon monoxide adsorbed at 118 K has been done. Noticeable changes of the parameters of the orbitals with increasing CO coverage have been registered. Elongation of the C-O bond without dissociation of the molecule has been deduced from the energetic separation of 3.4 eV between the 4σ and the 1π orbital. A weakening of the CO-interface bond with coverage has been found on the base of decreasing 5σ-1π separation with increasing 4σ/5σ intensity ratio. Perpendicular orientation of CO molecules to the plane of the substrate surface has been concluded from analysis of the constant initial state spectra of the 4σ and 5σ/1π orbitals.

Keywords

EN

79.60.Jv; 33.60.-q; 82.80.Pv

Discipline

• 79.60.Jv: Interfaces; heterostructures; nanostructures
• 82.80.Pv: Electron spectroscopy (X-ray photoelectron (XPS), Auger electron spectroscopy (AES), etc.)

• Journal: Acta Physica Polonica A
• Year: 1996
• Volume: 89
• Issue: 5-6
• Pages: 657-664

Dates

published

1996-05

received

1995-09-25

(unknown)

1995-11-29

Contributors

author

P. Godowski

• W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 937, 50-950 Wrocław, Poland

author

J. Onsgaard

• Institute of Physics, Odense University, Campusvej 55, 5230 Odense M, Denmark

author

S. Christensen

• Institute for Physics and Astronomy, Aarhus University, 8000 Aarhus, Denmark

author

J. Nerlov

• Department of Chemistry, University of Copenhagen, Universitetparken 5, 2100 Copenhagen, Denmark

Identifiers

DOI

10.12693/APhysPolA.89.657