Charge transport through a flexible molecular junction

Abstract

Vibrationally inelastic electron transport through a flexible molecular junction is investigated. The study is based on a mechanistic model for a biphenyl molecule between two metal electrodes. Employing methods from electron-molecule scattering theory, which allow a numerically exact treatment, we study the effect of vibrational excitation on the transmission probability for different parameter regimes. The current-voltage characteristic is analyzed for different temperatures, based on a Landauer-type formula. Furthermore, the process of electron assisted tunneling between adjacent wells in the torsional potential of the molecule is discussed and the validity of approximate methods to describe the transmission probability is investigated.

14 pages, Submited to Czech. J. Phys

References in corpus (7)

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• Numerically exact, time-dependent treatment of vibrationally coupled electron transport in single-molecule junctions
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• Numerically exact, time-dependent study of correlated electron transport in model molecular junctions
• Hierarchical quantum master equation approach to electronic-vibrational coupling in nonequilibrium transport through nanosystems: Reservoir formulation and application to vibrational instabilities
• A combined experimental and theoretical study on realizing and using laser controlled torsion of molecules
• Green function techniques in the treatment of quantum transport at the molecular scale
• Dynamical symmetry breaking in transport through molecules
• Bias-Controlled Selective Excitation of Vibrational Modes in Molecular Junctions: A Route Towards Mode-Selective Chemistry
• Are there approximate relations among transverse momentum dependent distribution functions?
• Vibronic effects on resonant electron conduction through single molecule junctions
• A multilayer multiconfiguration time-dependent Hartree study of the nonequilibrium Anderson impurity model at zero temperature
• Motor effect in electron transport through a molecular junction with torsional vibrations
• Vibrationally dependent electron-electron interactions in resonant electron transport through single-molecule junctions
• Effects of vibrational anharmonicity on molecular electronic conduction and thermoelectric efficiency
• Controlling the conductance of molecular junctions using proton transfer reactions: A theoretical model study
• On the Accuracy of the Noninteracting Electron Approximation for Vibrationally Coupled Electron Transport
• Influencing the conductance in biphenyl-like molecular junctions with THz radiation
• Voltage induced conformational changes and current control in charge transfer through molecules