P.-A. Glans

Surface electronic band structure and A surface state lifetimes at the BeÑ101 ¯ 0Ö surface: Experiment and theory

The surface electronic band structure of the Be(10(1) over bar 0) surface is experimentally determined by angle-resolved photoemission and calculated by using density-functional theory. The experim ...

Characterization of SiO2 layers thermally grown on 4H-SiC using high energy photoelectron spectroscopy

Si 2p and C 1s core level spectra recorded at different electron emission angles from SiO2/SiC samples using a photon energy of 3.0 keV show two components. These are identified as originating from SiO2 and SiC for Si 2p while for C 1s they are identified to originate from graphite like carbon and SiC. The relative intensity of these components are extracted and compared to calculated intensity variations assuming different models for the elemental distribution in the surface region. For both samples investigated best agreement between experimental and calculated intensity variations with emission angle is obtained when assuming a graphite like layer on top of the oxide layer. Contribution from carbon at the SiC/SiO2 interface could not be identified.

Surface electronic band structure and (A)over-bar surface state lifetimes at the Be(10(1)over-bar-0) surface : Experiment and theory

The surface electronic band structure of the Be(10(1) over bar 0) surface is experimentally determined by angle-resolved photoemission and calculated by using density-functional theory. The experim ...

Surface electronic band structure andĀsurface state lifetimes at theBe(101¯0)surface: Experiment and theory

The surface electronic band structure of the Be(10(1) over bar 0) surface is experimentally determined by angle-resolved photoemission and calculated by using density-functional theory. The experim ...

SiC(0001)v3×v3 surface state

An angle resolved photoemission study of the surface state on the 6H-SiC(0001) v3×v3 surface is reported. The symmetry of the surface state is determined and effects induced after oxygen and sodium exposures are investigated. The periodicity of the surface dispersion is investigated in two different azimuthal directions. The expected v3×v3 periodicity of a Mott-Hubbard ground state was not observed when going outside the first v3×v3 Surface Brillouin Zone.