A DFT-based Molecular Transport Implementation in ADF/BAND

Autor: Verzijl, C. J. O., Thijssen, J. M.
Rok vydání: 2014
Předmět:
Zdroj: J. Phys. Chem. C, 2012, 116 (46), pp 24393-24412
Druh dokumentu: Working Paper
DOI: 10.1021/jp3044225
Popis: We present a novel implementation of the first-principles approach to molecular charge transport using the non-equilibrium Green's function formalism in combination with the ADF/BAND periodic band-structure DFT code, together with results for several example systems. As a proof of concept, we first discuss transport calculations on 1D chains of Li and Al atoms. We then present a detailed study of BDT and archetypal molecular wires from the OPE-family, sandwiched between 3D Au contacts, comparing well with results from the literature. Our implementation further allows us to make a comparison of 3D contacts with and without periodic boundary conditions, the latter being particularly useful for modeling the needle-shaped contacts used in break-junction experiments.
Databáze: arXiv