ARUPS INVESTIGATION OF CO COADSORPTION WITH K ON W(100) SURFACE | Zendy

BAO SHI-NINO | Zendy; Li Zhu | Zendy; XU YA-BO | Zendy

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ARUPS INVESTIGATION OF CO COADSORPTION WITH K ON W(100) SURFACE

Author(s) -

BAO SHI-NINO,

Li Zhu,

XU YA-BO

Publication year - 1991

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.40.1888

Subject(s) - angle resolved photoemission spectroscopy , materials science , fermi level , ultraviolet , photoemission spectroscopy , atomic physics , electron , x ray photoelectron spectroscopy , condensed matter physics , electronic structure , physics , nuclear magnetic resonance , optoelectronics , quantum mechanics

Hel ultraviolet photoemission studies of CO coadsorption with different K coverages on W (100) surface show that the 1π/5σ level of α-CO shifts from 8.6eV to 9.3eV relative to the Fermi level while the K coverages increase, this indicates the increase of electron backdonation into 2π* of α-CO. Two independent peaks are found around 5.5 eV (Characteristic of β-Co), one is at 5.2eV, another is at 6.0eV. The peak at 5.2eV grows with increasing K coverages, its energy position is the same as that of O coadsorption with K on W(100) surface, this suggests that K forms bond to O of β-CO.

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