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We demonstrate a novel, negative-ion-mediated, electron-stimulated disordering process in LEED and, at nanoscopic scales, in the STM. Electron-stimulated disordering of the c(8 × 2) benzoate/Cu(110) structure in LEED is reversible, and HREELS shows that it is non-destructive to the adsorbed species. The disordering kinetics in LEED are pseudo first-order above a threshold between 5 and 7 eV with a...
We have extended the displaced harmonic oscillator model for negative ion resonance (NIR) scattering in high-resolution electron energy loss spectroscopy (HREELS), to interpret the energy transfer processes leading to disordering in STM and LEED, by allowing the curvature of the negative ion PES to be different to that of the ground PES. For the benzoate-Cu(110) system, the results of the extended...
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