Polarization and angle-resolved NEXAFS of benzene adsorbed on oriented single-domain Si(001)-2×1 surfaces

Abstract

We have investigated the adsorption of benzene on oriented single-domain Si(001)-(2\ifmmode\times\else\texttimes\fi{}1) surfaces at room temperature by means of fully polarization-resolved near-edge x-ray-absorption fine-structure (NEXAFS) experiments. The present study reveals that benzene chemisorbs in a stable cyclohexadienelike configuration, labeled as a ``butterfly'' in the literature, which is di-\ensuremath{\sigma} bonded to silicon atoms.