Berlin 2018 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 35: Nonequilibrium Quantum Many-Body Systems I (joint session TT/DY)
DY 35.3: Vortrag
Mittwoch, 14. März 2018, 10:15–10:30, H 3010
Emergent CDW order in a 1D correlated electron system with underlying magnetic microstructure — Thomas Köhler, Sebastian Paeckel, and •Salvatore Manmana — Institut f. Theoretische Physik, U. Göttingen
We address the question of charge density wave order (CDW) emerging in a nonequilibrium situation in the course of a photo excitation. Using time-dependent matrix product states (tMPS), we model a pump excitation using Peierls substitution in a Hubbard chain at quarter filling, which is in the presence of an alternating magnetic background field. This magnetic microstructure is obtained for a 1D toy-manganate system, in which the t2g electrons form a frozen lattice of Zener polarons, but do not participate in the charge transport. We investigate the interplay of the magnetic microstructure and the Hubbard U term for the dynamics of the system and discuss possible realizations with ultracold atoms on optical lattices.
We acknowledge financial support by DFG through research unit FOR1807 (project P7) and SFB/CRC1073 (project B03).