2007/04/05 by Jing‐Tao Lü, J. T. Lü, Jian‐Sheng Wang +1 · 2 citations
Engineering · Materials Science · Physics and Astronomy · #Molecular Junctions and Nanostructures #Quantum and electron transport phenomena #Thermal properties of materials #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.76.165418
published as Phys. Rev. B 76, 165418 (2007) · 10 pages, 7 figures
arxiv created 2007/04/05 · openalex publication_date 2007/10/16 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Employing the nonequilibrium Green's function method, we develop a fully quantum mechanical model to study the coupled electron-phonon transport in one-dimensional atomic junctions connecting to one-dimensional leads. This model enables us to study the electronic and phononic transport on an equal footing. We derive the electrical and energy currents of the coupled electron-phonon system and present a self-consistent picture of energy exchange between them. As an application, we study the heat dissipation in current-carrying atomic junctions with metallic and semiconductor leads. We find that the inclusion of phonon transport is important in determining the heat dissipation and temperature change of the atomic junctions.