Correlated Electron Systems Studied by Soft X-ray ARPES
As a result, the presence of possible surface bands as well as the lack of information regarding three-dimensionality (kz-dispersion) of the electronic structure makes a comparison with theoretical calculations somewhat difficult. I will present the very first experimental data of the true bulk-electronic structure of MgB2acquired by soft x-ray ARPES. Our high quality data show no trace of surface bands and is distinct from previously published data. In addition, the electronic structure is found to displays a clear 3D character and has been thoroughly mapped for all k-momenta and as a function of polarization. The high quality of our data allows for a direct and quantitative comparison of the electronic structure with calculations.