Condensed Matter Seminar Series

Transport Through Strongly Correlated Systems

Rodolfo Jalabert

University of Strasbourg

Thursday May 10,  11:30 am,  Room 298,  Physics Building

Abstract:  The conductance through a one-dimensional sample in which electrons are strongly correlated can be related to the persistent current of a large ring, composed of the sample and a non-interacting lead. A scaling law in the lead length, obtained from DMRG calculations, allows extrapolation to a well-defined value of the conductance. This limiting value depends only on the intrinsic properties of the sample and on the nature of the contacts between the sample and the lead. The application of this embedding method to a few physical examples will be discussed. In particular, we will show how the Coulomb blockade can be obtained without tunnel barriers, and how the electron conductance can be enhanced by a repulsive interaction in the case of strong disorder.