Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2010-07-31
Phys. Rev. B 82, 205110 (2010)
Physics
Condensed Matter
Strongly Correlated Electrons
12 pages RevTex4, 12 eps figures, as published, minor revisions
Scientific paper
10.1103/PhysRevB.82.205110
We calculate the non-equilibrium electronic transport properties of a one-dimensional interacting chain at half filling, coupled to non-interacting leads. The interacting chain is initially in a Mott insulator state that is driven out of equilibrium by applying a strong bias voltage between the leads. For bias voltages above a certain threshold we observe the breakdown of the Mott insulator state and the establishment of a steady-state electronic current through the system. Based on extensive time-dependent density matrix renormalization group simulations, we show that this steady-state current always has the same functional dependence on voltage, independent of the microscopic details of the model and relate the value of the threshold to the Lieb-Wu gap. We frame our results in terms of the Landau-Zener dielectric breakdown picture. Finally, we also discuss the real-time evolution of the current, and characterize the current-carrying state resulting from the breakdown of the Mott insulator by computing the double occupancy, the spin structure factor, and the entanglement entropy.
Al-Hassanieh Khaled A.
Dagotto Elbio
Feiguin Adrian E.
Gonzalez Ivan
Heidrich-Meisner Fabian
No associations
LandOfFree
Non-equilibrium electronic transport in a one-dimensional Mott insulator does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Non-equilibrium electronic transport in a one-dimensional Mott insulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-equilibrium electronic transport in a one-dimensional Mott insulator will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-8806