Dresden 2017 – wissenschaftliches Programm
MA 38.7: Vortrag
Mittwoch, 22. März 2017, 11:15–11:30, HSZ 403
Electron dynamics of correlated materials — •Viktor Valmispild1,2, Vladimir Antropov3, Evgeny Gorelov4, Alexander Joura1, Martin Eckstein5, and Alexander Lichtenstein1,2 — 1Institute of Theoretical Physics, University of Hamburg, Jungiusstrasse 9, 20355 Hamburg, Germany — 2The Hamburg centre for ultrafast imaging, 22761 Hamburg, Germany — 3Ames Laboratory, Ames, IA 50011, USA — 4European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany — 5Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
The work is focused on theoretical description of electron dynamics in correlated materials. The report consists of two sections:
In the first part we study the single-band Hubbard model on a infnite-dimensional lattice in the presence of a large spatially uniform electric field out of equilibrium. We study the model out of equilibrium using the Keldysh formalism and perturbation theory in the Coulomb interaction U. This work present numerical results for the total energy of the system on an infinite-dimensional hypercubic lattice with nearest-neighbor hopping.
The second part of investigations conducted dynamic magnetic susceptibility simple transition metals Iron, Cobalt and Nickel.