Abstract
Surface-enhanced Raman scattering (SERS) has been observed for the first time on a Cu(111) surface chlorinated in ultra-high vacuum (UHV). The surface obtained preserves its capability to enhance Raman scattering for an indefinitely long time in UHV at sample temperatures T s<420 K. SERS in this case is shown to be associated with the presence of CuCl on the Cu(111) surface. Enhanced Raman spectra of pyridine adsorbed on chlorinated Cu(111) surface have been obtained.
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