A ARUPS INVESTIGATION OF TWO SURFACE SUPERSTRU-CTURES (4×1)-O AND (2×2)-S ON VANADIUM(001) SURFACES | Zendy

许掌龙 | Zendy; 刘古 | Zendy; 季振国 | Zendy; 周小霞 | Zendy

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A ARUPS INVESTIGATION OF TWO SURFACE SUPERSTRU-CTURES (4×1)-O AND (2×2)-S ON VANADIUM(001) SURFACES

Author(s) -

许掌龙,

刘古,

季振国,

周小霞

Publication year - 1988

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.37.311

Subject(s) - vanadium , adsorption , angle resolved photoemission spectroscopy , materials science , oxygen , surface (topology) , symmetry (geometry) , surface energy , oxygen atom , condensed matter physics , chemistry , electronic structure , physics , molecule , metallurgy , geometry , mathematics , organic chemistry , composite material

Two surface superstructures (4×1)-O and (2×2)-S, induced respectively by oxygen and sulphur segregation on the V(001) surface, are studied in detail by ARVPS. The energy levels and symmetry of the adsorbate surface states derived from S- and O-ordered adsorbate over-layers are determined. Experimental evidence shows that the adsorption sites of oxygen on V(001) surface are four-fold hollow sites. All the experimental results consist with theoretical calculations, and are similar to that for oxygen on Ni(001) and Cr(001) surfaces.

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