Title: Strongly Correlated Electrons Driven by an Electric Field
Speaker: Camille Aron, Rutgers Univiersity, USA
Abstract:
The out-of-equilibrium physics of correlated electrons is attracting a
lot of interest, motivated by new experimental realizations in
non-linear transport in devices, heterostructures and cold atoms. In
this talk, I will focus on the Hubbard-U model driven out of
equilibrium by a constant electric field E. I will briefly explain how
one can solve the finite-U finite-E problem directly in the steady
state (bypassing the transient dynamics) by means of a new dynamical
mean-field theory. Afterwards, I will mainly discuss the fate of the
Mott physics in the non-linear (strong E) regime by detailing two key
features:
- the dimensional crossover towards a lower dimensional system;
- the dielectric breakdown of the Mott insulator.
Reference:
C. Aron, G. Kotliar, C. Weber, Phys. Rev. Lett. 108, 086401 (2012)
C. Aron, arXiv:1203:3540 (2012)