Nonequilibrium diagrammatic technique for Hubbard Green functions

Abstract

We introduce diagrammatic technique for Hubbard nonequilibrium Green functions (NEGF). 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.

arXiv comment13 pages, 12 figures

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• Kinetic Schemes in Open Interacting Systems
• Hubbard NEGF Analysis of Photocurrent in Nitroazobenzene Molecular Junction
• Photoinduced Anomalous Coulomb Blockade and the Role of Triplet States in Electron Transport through an Irradiated Molecular Transistor II: Effects of Electron-Phonon Coupling and Vibrational Relaxation
• Electron Transfer Methods in Open Systems
• Theory of Electron Spin Resonance Scanning Tunneling Microscopy: The First Decade