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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.
Originalsprache | englisch |
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Seiten (von - bis) | 125149 |
Seitenumfang | 1 |
Fachzeitschrift | Physical Review E |
Jahrgang | 92 |
Ausgabenummer | 12 |
DOIs | |
Publikationsstatus | Veröffentlicht - 1 Sept. 2015 |
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FWF - TOPOMAT - Ab-initio Zugänge zu topologischen Materiezuständen
1/11/14 → 31/10/22
Projekt: Forschungsprojekt