Transport in state space: voltage-dependent conductance calculations of benzene-1,4-dithiol.

Yeganeh, Sina; Ratner, Mark A; Galperin, Michael; Nitzan, Abraham · Nano Lett · 2009

basic_science · Level V

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Abstract

We implement a method to study transport in a basis of many-body molecular states using the nonequilibrium Hubbard Green's function technique. A well-studied system, a junction consisting of benzene-dithiol on gold, is the focus of our consideration. Electronic structure calculations are carried out at the Hartree-Fock (HF), density functional theory (DFT), and coupled-cluster singles and doubles (CCSD) levels, and multiple molecular states are included in the transport calculation. The conductance calculation yields new information about the transport mechanism in BDT junctions.