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

Journal Article · Tue Jun 22 00:00:00 EDT 1999 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.60.10715· OSTI ID:771868

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

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1. LBNL Library

The local structure around adsorbed carbon atoms on Ni(100) has been determined at low coverage as well as in the 0.5 monolayer (2x2) p4g ''clock'' reconstruction 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.

• Research Organization: Lawrence Berkeley National Lab., CA (US)
• Sponsoring Organization: USDOE Director, Office of Science. Office of Basic Energy Studies. Division of Materials Sciences (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 771868
• Report Number(s): LBNL--46087
• Journal Information: Physical Review B, Journal Name: Physical Review B Journal Issue: 15 Vol. 60
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADSORPTION CARBON NICKEL PHOTOEMISSION
CARBON
DIFFRACTION
MORPHOLOGICAL CHANGES
NICKEL
PHOTOEMISSION
PRECURSOR
STRAINS