An experimental and theoretical study of the electronic structure of the W (111) surface

We report results of synchrotron angular resolved photoemission experiments from W(111) together with a theoretical analysis of the data. For normal emission several different surface sensitive features are found depending on the s or p polarization of the incident radiation. The symmetry assignements derived from this polarization dependance are compared with theoretical results based on a tight binding calculation of the electronic structure of a 16 layer thick slab. The same analysis is extended to off-normal data collected in the mirror plane.