Molecular adsorption of (CH3)2S on Ni(1 0 0) studied by S K-edge NEXAFS and XPS

We have studied the (CH3)2S/Ni(1 0 0) system using polarization dependent S K-edge near edge X-ray absorption fine structure (NEXAFS) and S 1s X-ray photoelectron spectroscopy techniques. Polarization dependence was noticeable in the S K-edge NEXAFS spectra for submonolayer phase. The NEXAFS results imply that the (CH3)2S molecule is lying flat on the Ni(1 0 0) surface. It was found from the S 1s XPS measurements that the (CH3)2S molecule was in a state close to (CH3)2S−.