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TT: Fachverband Tiefe Temperaturen

TT 71: Correlated Electrons: Poster Session

TT 71.61: Poster

Mittwoch, 18. März 2015, 15:00–18:00, Poster B

Nonlinear charge transport in interacting ring structures: transient and steady state dynamics — •Benedikt Schönauer and Peter Schmitteckert — Institut für Nanotechnologie, Karlsruher Institut für Technologie, Karlsruhe, Deutschland

We investigate the effect of density-density interactions in various ring structures coupled to non-interacting leads on the transient and the steady state currents. To this end we use a time dependent density matrix renormalization group method to calculate the time resolved current in response to a quench in the charge balance. Our results suggest that an asymmetry of the ring structures gives rise to interesting new features of the long time limit of the local current in the rings. In addition finite size effects seem to be significantly increased for these systems as compared to strictly one-dimensional structures.