Directional uv photoemission from (100) and (110) molybdenum surfaces

A study of the (100) and (110) molybdenum surfaces by directional photoemission spectroscopy is presented. Energy distribution spectra formed by photoelectrons emitted normal to the surfaces have been measured for photon energies between 10.2 and 21.2 eV. The results are discussed in terms of calculated band structure within the framework of the K∥-conservation assumption. A good agreement is found between the main features of the experimental spectra and the emission expected from the band structure along the corresponding symmetry line in the Brillouin zone, assuming essentially direct-transition and surface-emission processes. Two extra structures are interpreted in terms of surface states or resonances: on the (100) surface, 0.5 eV below EF; on the (110) surface, 4.5 eV below EF in the s-d hybridization gap

Highly Spin-Polarized Photoemission near Threshold from Physisorbed Xenon and Krypton Atoms

Schönhense G, Eyers A, Friess U, Schäfers F, Heinzmann U. Highly Spin-Polarized Photoemission near Threshold from Physisorbed Xenon and Krypton Atoms. Physical review letters. 1985;54(6):547-550.By use of circularly polarized synchrotron radiation at BESSY, spin-polarized photoemission from the valence orbitals of Xe and Kr atoms adsorbed on the Pt(111) single-crystal surface has been studied. Under certain conditions almost complete photoelectron polarization parallel or antiparallel to the photon spin was observed, allowing a direct assignment of quantum numbers of the states involved. Highly resolved intensity and polarization spectra in the threshold region exhibit pronounced variations versus photon energy

Spin-resolved photoemission from Xe on Pd(111) in the dilute phase: The model case of singly adsorbed atoms

Vogt B, Kessler B, Müller N, Schönhense G, Schmiedeskamp B, Heinzmann U. Spin-resolved photoemission from Xe on Pd(111) in the dilute phase: The model case of singly adsorbed atoms. Physical Review Letters. 1991;67(10):1318-1321