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Electron-energy-loss spectroscopy of ordered oxygen overlayers on Ru(001)

Journal Article · · Phys. Rev. Lett.; (United States)
High-resolution electron-energy-loss measurements and relevant theoretical calculations for the vibrational structure of ordered oxygen overlayers on the Ru(001) surface are presented. The vibrational spectrum of the p(2 x 2) overlayer shows a single dipolar-active mode above the substrate phonon band. Because of a reduction in symmetry of the threefold adsorption site, however, the vibrational spectrum of the p(1 x 2) overlayer is fundamentally different, showing two dipolar-active modes above the substrate phonon band.
Research Organization:
Department of Physics, University of California, Irvine, California 92717
DOE Contract Number:
AT03-79ER10432
OSTI ID:
5474859
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 51:21; ISSN PRLTA
Country of Publication:
United States
Language:
English