Structural precursor to adsorbate-induced reconstruction: C on Ni(100)

Journal Article · Fri Oct 01 04:00:00 EDT 1999 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.60.10715· OSTI ID:686890

Terborg, R; Hoeft, J T; Polcik, M; Lindsay, R; Schaff, O; Bradshaw, A M ^[1]; Toomes, R; Booth, N A; Woodruff, D P ^[2]; Rotenberg, E; Denlinger, J ^[3]

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1. Fritz Haber Institute, Faradayweg 4-6, 14195 Berlin (Germany)
2. Physics Department, University of Warwick, Coventry CV4 7AL (United Kingdom)
3. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

The local structure around adsorbed carbon atoms on Ni(100) has been determined at low coverage as well as in the 0.5 monolayer (2{times}2)p4g {open_quotes}clock{close_quotes} reconstruction by scanned energy mode photoelectron diffraction. At low coverage, there is no radial strain of the Ni atoms surrounding the adsorbed carbon, contrary to previous suggestions. None of the C-Ni near-neighbor distances are changed by reconstruction, but the Ni-Ni nearest-neighbor distance in the top layer increases significantly, showing that the adsorbate-induced compressive stress is associated with Ni-Ni, rather than Ni-C, repulsion. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 686890
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 15 Vol. 60; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADSORPTION
CARBON
ELECTRON DIFFRACTION
NICKEL
PHOTOELECTRON SPECTROSCOPY
STRESSES