Phonon-assisted current noise in molecular junctions

Abstract

We investigate the effects of phonon scattering on the electronic current noise through nanojunctions using the non-equilibrium Green's functions formalism extended to include the counting field. In the case of weak electron-phonon coupling and a single broad electronic level we derive an analytic expression for the current noise at arbitrary temperature and identify physically distinct contributions based on their voltage dependence. We apply our theory to the experimentally relevant case of a deuterium molecule placed in a break-junction and predict a significant inelastic contribution to the current noise.

4 pages, 3 figures; updated version

References in corpus (10)

• Franck-Condon blockade and giant Fano factors in transport through single molecules
• Inelastic transport theory from first-principles: methodology and applications for nanoscale devices
• Highly conductive molecular junctions based on direct binding of benzene to platinum electrodes
• Inelastic scattering and local heating in atomic gold wires
• Modeling inelastic phonon scattering in atomic- and molecular-wire junctions
• Electron-vibration interaction in single-molecule junctions: from contact to tunneling regime
• Inelastic tunneling effects on noise properties of molecular junctions
• Electron-phonon interaction and full counting statistics in molecular junctions
• Vibration-induced correction to the current through a single molecule
• Charge transfer statistics of a molecular quantum dot with a vibrational degree of freedom

Cited by in corpus (7)

• Charge transfer statistics of a molecular quantum dot with strong electron-phonon interaction
• Nonlinear effects of phonon fluctuations on transport through nanoscale junctions
• Current noise in molecular junctions: effects of the electron-phonon interaction
• Long transient dynamics in the Anderson-Holstein model out of equilibrium
• Inelastic scattering and heating in a molecular spin pump
• Nanomechanical effects in an Andreev quantum dot
• Counting Statistics in Nanoscale Junctions