2-Butyne on Si(0Â 0Â 1) at room temperature: An XPS and NEXAFS study

▶ Adsorption of 2-butyne on Si(001)-2 × 1. ▶ 3D maps of real time Si2p and C1s XPS while dosing. ▶ NEXAFS C K edge spectra of 2-butyne on Si(001). ▶ 2-butyne is “di-sigma” bound in a “on-dimer” geometry on Si(001)-2 × 1 at room temperature.