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The laser induced desorption of CO from Pd(111) at 308nm and 532nm is compared to the thermal desorption by recording FTIR and SFG spectra of the CO molecules remaining on the surface. There is no photodesorption from a fully ordered CO layer. However, when the CO layer is adsorbed below 270K, extra sites (assigned to antiphase domain boundaries) appear in addition to the normal sites (assigned to...
Sum frequency generation and IR absorption spectra of CO adsorbed on Pd(111) are reported. Adsorption of CO in the surface temperature range 150–230K results in the appearance of extra peaks in the spectral range of the CO stretching vibration. The conditions of appearance of these peaks, and their stability, are investigated. The extra peaks are assigned to sites at antiphase domain boundaries, in...
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