Integrable Mott insulators driven by finite electric field

Details Integrable Mott insulators driven by finite electric field Integrable Mott insulators driven by finite electric field

2011-06-03

arxiv.org/abs/1106.0604v1

Phys. Rev. Lett. 107, 126601 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

We develop a method for extracting the steady nonequilibrium current from studies of driven isolated systems, applying it to the model of one-dimensional Mott insulator at high temperatures. While in the nonintegrable model the nonequilibrium conditions can be accounted by internal heating, the integrability leads to a strongly nonlinear dc response with vanishingly small dc conductivity in the linear--response regime. The finding is consistent with equilibrium results for dc limit of the optical conductivity determined in the presence of a weak and decreasing perturbation.

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