Determination of Electronic Structure Using Spin-Polarized Positrons (E02 (A03))

Spin-polarized 2D-ACAR (Angular Correlation of Annihilation Radiation) is a powerful technique for the measurement of the spin-resolved Fermi surface. We will focus on the electronic structure of elemental crystals, e.g. Pd, Gd and Cr, and of intermetallic compounds such as Heusler alloys in order to obtain an understanding of the electron correlations. The theoretical calculation of the electron momentum density in correlated systems will be developed further by solving a lattice Hubbard-model with short range Coulomb interactions to model electron-electron and electron-positron interactions.

DFG Programme CRC/Transregios

Subproject of TRR 80:  From Electronic Correlations to Functionality

Applicant Institution Universität Augsburg

Co-Applicant Institution Technische Universität München (TUM)

Project Heads Professor Dr. Peter Böni; Professor Dr. Liviu Chioncel; Privatdozent Dr. Volker Eyert, until 12/2010; Professor Dr. Christoph Hugenschmidt