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The conductance through a molecular device including electron-electron and electron-phonon interactions is calculated using the Numerical Renormalization Group method. At low temperatures and weak electron-phonon coupling the properties of…

Strongly Correlated Electrons · Physics 2007-05-23 P. S. Cornaglia , H. Ness , D. R. Grempel

Electron transport characteristics through molecular wires are studied by using the Green's function formalism. Parametric calculations are performed based on the tight-binding model to investigate the transport properties through the…

Mesoscale and Nanoscale Physics · Physics 2009-11-06 Santanu K. Maiti

Calculating an exact self energy for ab initio transport calculations relevant to ``Molecular Electronics'' can be troublesome. Errors or insufficient approximations made at this step are often the reason why many molecular transport…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 F. Evers , A. Arnold

We study the model of a molecular switch comprised of a molecule with a soft vibrational degree of freedom coupled to metallic leads. In the presence of strong electron-ion interaction, different charge states of the molecule correspond to…

Mesoscale and Nanoscale Physics · Physics 2008-12-18 Fabio Pistolesi , Yaroslav M. Blanter , Ivar Martin

We propose a tight-binding model to investigate electronic transport properties of single helical protein molecules incorporating both the helical symmetry and the possibility of multiple charge transfer pathways. Our study reveals that due…

Mesoscale and Nanoscale Physics · Physics 2016-06-10 Sourav Kundu , S. N. Karmakar

In the field of molecular electronics, particularly in quantum transport studies, the orientation of molecules plays a crucial role. This orientation, with respect to the electrodes, can be defined through the cavity of ring-shaped…

Materials Science · Physics 2023-02-17 A. Martinez-Garcia , T. de Ara , L. Pastor-Amat , C. Untiedt , E. B. Lombardi , W. Dednam , C. Sabater

The simplicity of single-molecule junctions based on direct bonding of a small molecule between two metallic electrodes make them an ideal system for the study of fundamental questions related to molecular electronics. Here we study the…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 O. Tal , M. Kiguchi , W. H. A. Thijssen , D. Djukic , C. Untiedt , R. H. M. Smit , J. M. van Ruitenbeek

A self-consistent method for calculating electron transport through a molecular device is proposed. It is based on density functional theory electronic structure calculations under periodic boundary conditions and implemented in the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 San-Huang Ke , Harold U. Baranger , Weitao Yang

Molecular systems can exhibit a complex, chemically tailorable inner structure which allows for targeting of specific mechanical, electronic and optical properties. At the single-molecule level, two major complementary ways to explore these…

Mesoscale and Nanoscale Physics · Physics 2017-04-05 Rocco Gaudenzi , Maciej Misiorny , Enrique Burzurí , Maarten R. Wegewijs , Herre S. J. van der Zant

Theoretical and experimental values to date for the resistances of single molecules commonly disagree by orders of magnitude. By reformulating the transport problem using boundary conditions suitable for correlated many-electron systems, we…

Condensed Matter · Physics 2007-05-23 P. Delaney , J. C. Greer

This mini review focuses on conductance measurements through molecular junctions containing few tens of molecules, which are fabricated along two approaches: (i) conducting atomic force microscope contacting a self-assembled monolayers on…

Applied Physics · Physics 2019-11-12 Dominique Vuillaume

Ballistic transport of electrons through a quantum wire with a constriction is studied in terms of Bohm's interpretation of quantum mechanics, in which the concept of a particle orbit is permitted. The classical bouncing ball trajectories,…

Condensed Matter · Physics 2015-06-25 Hua Wu , D. W. L. Sprung

We discuss the factors that determine the overall shape and magnitude of the current-voltage (I-V) characteristics of a variety of molecular conductors sandwiched between two metallic contacts. We analyze the individual influences of the…

Mesoscale and Nanoscale Physics · Physics 2016-08-31 A. W. Ghosh , S. Datta

Many types of molecular motors have been proposed and synthesized in recent years, displaying different kinds of motion, and fueled by different driving forces such as light, heat, or chemical reactions. We propose a new type of molecular…

Mesoscale and Nanoscale Physics · Physics 2010-11-24 Johannes S. Seldenthuis , Ferry Prins , Joseph M. Thijssen , Herre S. J. van der Zant

It is understood that molecular conjugation plays an important role in charge transport through single-molecule junctions. Here, we investigate electron transport through an anthraquinone based single-molecule three-terminal device. With…

Mesoscale and Nanoscale Physics · Physics 2016-05-19 M. Koole , J. M. Thijssen , H. Valkenier , J. C. Hummelen , H. S. J. van der Zant

The effect of vibrational motion on resonant charge transport through single molecule junctions is investigated. The study is based on a combination of first-principles electronic structure calculations to characterize the system and…

Other Condensed Matter · Physics 2007-12-24 Claudia Benesch , Martin Cizek , Jiri Klimes , Michael Thoss , Wolfgang Domcke

The multilayer multiconfiguration time-dependent Hartree theory within second quantization representation of the Fock space is applied to study correlated electron transport in models of single-molecule junctions. Extending previous work,…

Mesoscale and Nanoscale Physics · Physics 2015-06-12 Haobin Wang , Michael Thoss

We analyze the effect of a gate on the conductance of molecules by separately evaluating the gate-induced polarization and the potential shift of the molecule relative to the leads. The calculations use ab initio density functional theory…

Materials Science · Physics 2007-05-23 San-Huang Ke , Harold U. Baranger , Weitao Yang

Understanding the properties of electronic transport across metal-molecule interfaces is of central importance for controlling a large variety of molecular-based devices such as organic light emitting diodes, nanoscale organic spin-valves…

Mesoscale and Nanoscale Physics · Physics 2016-02-03 T. Yelin , R. Korytar , N. Sukenik , R. Vardimon , B. Kumar , C. Nuckolls , F. Evers , O. Tal

Motivated by recent experiments on electric transport through single molecules and quantum dots, we investigate a model for transport that allows for significant coupling between the electrons and a boson mode isolated on the molecule or…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Urban Lundin , Ross H. McKenzie