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The photochemical reaction of water adsorbed on Pt(111) at 85 K has been investigated by high resolution electron energy loss spectroscopy (HREELS) and thermal desorption spectroscopy (TDS). Under the action of ultraviolet (UV) light, molecular desorption as well as dissociation of adsorbed water into OH and H has been observed. In addition to the known vibrational losses of adsorbed OH at 430 cm...
We investigate the carrier-concentration dependence of plasmon-polar phonon coupling at semiconductor surfaces by taking account of the dielectric response of a semi-infinite carrier-electron gas and the polar-phonon polarization. The dynamical response of carriers is treated with the random-phase approximation, and the phonon polarization is described by the Lorentzian oscillator model. The induced...
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