Ab initio transport properties of nanostructures from maximally localized Wannier functions

By A. Calzolari, Nicola Marzari, Ivo Souza, Marco Buongiorno Nardelli. 2003

225 citations recorded by the source corpus.

We present a comprehensive first-principles study of the ballistic transport properties of low-dimensional nanostructures such as linear chains of atoms (Al, C) and carbon nanotubes in the presence of defects. An approach is introduced where quantum conductance is computed from the combination of accurate plane-wave electronic structure calculations, the evaluation of the corresponding maximally localized Wannier functions, and the calculation of transport properties by a real-space Green's function method based on the Landauer formalism. This approach is computationally very efficient, can be straightforwardly implemented as a post-processing step in a standard electronic-structure calculation, and allows us to directly link the electronic transport properties of a device to the nature of the chemical bonds, providing insight onto the mechanisms that govern electron flow at the nanoscale.

Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/2580bde8ebe1d6a63158e589822a95b5277555c3

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In Atomic and Molecular Physics, and Optics

In Electrical and Electronic Engineering

Citations in the corpus

Maximally-localized Wannier Functions: Theory and Applications (2011, background): “Maximally-localized Wannier functions were first used in this context by Calzolari et al. (2004), who studied Al and C chains and a (5,0) carbon nanotube with a single Si substitutional defect, and by Lee et al. (2005), who studied covalent functionalizations of metallic nanotubes - capabilities now”