Iterated Perturbation Theory for Mott Insulators in a Static Electric Field with Optical Phonons

Abstract

This manuscript aims to compare the so-called iterated perturbation theory (IPT) and auxiliary master equation approach (AMEA) impurity solvers for a Mott insulating system driven out of equilibrium by a static electric field. Electronic heat bath and optical phonons are employed as dissipation mechanism of the current-induced Joule heat that the excited electrons of the lattice experience as the result of the field's driving. Despite its simplicity, the IPT approach yields results which qualitatively are in good agreement with those obtained within the AMEA impurity solver, although fails to reproduce some correlation effects.

15 pages, 6 figures and 1 table of contents, data are available at 10.3217/2e7w3-65h79

References in corpus (11)

• Correlated electron systems periodically driven out of equilibrium: Floquet + DMFT formalism
• Nonequilibrium Dynamical Mean Field Theory: an auxiliary Quantum Master Equation approach
• Steady-state nonequilibrium density of states of driven strongly correlated lattice models in infinite dimensions
• Interaction quench in the Holstein model: Thermalization crossover from electron- to phonon-dominated relaxation
• Electric-field-driven resistive switching in dissipative Hubbard model
• Configuration interaction based nonequilibrium steady state impurity solver
• Correlated Mott insulators in strong electric fields: Role of phonons in heat dissipation
• Impact ionization processes in a photodriven Mott insulator: influence of phononic dissipation
• Electrically driven insulator-to-metal transition in a correlated insulator: Electronic mechanism and thermal description
• Correlated Mott insulators in a strong electric field: The effects of phonon renormalization
• Impact of disorder and phonons on the Hubbard bands of Mott insulators in strong electric fields