K-SPACE-RESOLVED INVERSE-PHOTOEMISSION STUDY OF ZRC(100) AND VC(100)

A k-space-resolved inverse-photoemission study of ZrC(100) and VC(100) along the [010] and [011] azimuthal directions for emitted photons of 9.8 eV is presented. Recorded spectra are compared with theoretical spectra calculated using the time-reversed low-energy-electron-diffraction scheme. The calculated spectra are shown to reproduce the relative intensities and the trends in the peak dispersions fairly well. However, when probing states along the DELTA direction, only final states of DELTA5 symmetry are observed experimentally, although transitions to DELTA1 states are also predicted in the calculation.