Current characteristics of a one-dimensional Hubbard chain: Role of correlation and dissipation

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Abstract

We study the electronic transport in an infinite one-dimensional Hubbard chain, driven by a homogeneous electric field. The physical chain is coupled to fermionic bath chains in order to account for dissipation and to prevent the occurrence of Bloch oscillations. The steady-state current is computed in the frame of Keldysh Green's functions in cluster perturbation theory. The current characteristics are dominated by resonant-tunneling-like structures, which can be traced back to Wannier-Stark resonances due to antiferromagnetic correlations. The same current characteristic occurs in a noninteracting Wannier-Stark model with alternating on-site energies. Nonlocal effects of the self-energy can be accounted for the observed physical behavior.
Original languageEnglish
Pages (from-to)125149
Number of pages1
JournalPhysical review / E
Volume92
Issue number12
DOIs
Publication statusPublished - 1 Sep 2015

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Dissipation
dissipation
Nonlocal Effects
resonant tunneling
Energy
Perturbation Theory
Green's function
baths
Electric Field
Green's functions
perturbation theory
Electronics
occurrences
Oscillation
oscillations
electric fields
energy
electronics
Model

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Current characteristics of a one-dimensional Hubbard chain: Role of correlation and dissipation. / Neumayer, Jakob; Arrigoni, Enrico; Aichhorn, Markus; von der Linden, Wolfgang.

In: Physical review / E, Vol. 92, No. 12, 01.09.2015, p. 125149.

Research output: Contribution to journalArticleResearchpeer-review

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