Regensburg 2016 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 78: Correlated Electrons: Poster Session
TT 78.53: Poster
Donnerstag, 10. März 2016, 15:00–18:30, Poster D
Electronic structure of Mo and W investigated with positron annihilation — •Markus Dutschke1, Michael Sekania1,3, Diana Benea4,5, Hubert Ceeh6, Joseph-A. Weber6, Christoph Hugenschmidt6, and Liviu Chioncel1,2 — 1Theoretical Physics III, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, D-86135 Augsburg, Germany — 2Augsburg Center for Innovative Technologies, University of Augsburg, D-86135 Augsburg, Germany — 3Andronikashvili Institute of Physics, Tamarashvili 6, 0177 Tbilisi, Georgia — 4Faculty of Physics, Babes-Bolyai University, Kogalniceanustr 1, Ro-400084 Cluj-Napoca, Romania — 5Department of Chemistry, Ludwig Maximilian University of Munich, Butenandstr. 5-13, D-81377 München, Germany — 6FRM II, Technische Universität München, Lichtenbergstrasse 1 D-85748 Garching, Germany
We perform electronic structure calculations to analyze the momentum distribution of the transition metals molybdenum and tungsten. We study the influence of positron-electron and the electron-electron interactions on the shape of the two-dimensional angular correlation of positron annihilation radiation (2D-ACAR) spectra. Our analysis is performed within the framework of the combined Density Functional (DFT) and Dynamical Mean-Field Theory (DMFT). Computed spectra are compared with recent experimental investigations.