Nonequilibrium diagrammatic technique for Hubbard Green functions

Feng Chen, Maicol A. Ochoa, Michael Galperin

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

We introduce diagrammatic technique for Hubbard nonequilibrium Green functions. The formulation is an extension of equilibrium considerations for strongly correlated lattice models to description of current carrying molecular junctions. Within the technique intra-system interactions are taken into account exactly, while molecular coupling to contacts is used as a small parameter in perturbative expansion. We demonstrate the viability of the approach with numerical simulations for a generic junction model of quantum dot coupled to two electron reservoirs.

Original languageEnglish
Article number092301
JournalJournal of Chemical Physics
Volume146
Issue number9
DOIs
StatePublished - 7 Mar 2017
Externally publishedYes

Funding

FundersFunder number
Guy Cohen and Robert van Leeuwen
National Science FoundationCHE-1565939, 1565939
U.S. Department of EnergyDE-SC0006422

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