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For several years the electronic structure properties of the novel two-dimensional system silicene have been studied extensively. Electron transport across metal-silicence junctions, however, remains relatively unexplored. To address this…

材料科学 · 物理学 2015-04-15 Yun-Peng Wang , J. N. Fry , Hai-Ping Cheng

Many-body electron interactions are at the heart of chemistry and solid-state physics. Understanding these interactions is crucial for the development of molecular-scale quantum and nanoelectronic devices. Here, we investigate…

Graphene's isolation launched explorations of fundamental relativistic physics originating from the planar honeycomb lattice arrangement of the carbon atoms, and of potential technological applications in nanoscale electronics. Bottom-up…

介观与纳米尺度物理 · 物理学 2015-02-13 Constantine Yannouleas , Igor Romanovsky , Uzi Landman

In this contribution we demonstrate structural control over a transport resonance in HS(CH$_{2}$)$_{n}$[1,4 - C$_{6}$H$_{4}$](CH$_{2}$)$_{n}$SH (n = 1, 3, 4, 6) metal - molecule - metal junctions, fabricated and tested using the scanning…

介观与纳米尺度物理 · 物理学 2015-06-04 Carly Brooke , Andrea Vezzoli , Simon J. Higgins , Linda A. Zotti , J. J. Palacios , Richard J. Nichols

The non-equilibrium tunnel transport processes are considered in a square lattice of metallic nanogranules embedded into insulating host. Based on a simple model with three possible charging states (+,-, or 0) of a granule and three kinetic…

材料科学 · 物理学 2007-05-23 Yu. G. Pogorelov , J. F. Polido

Understanding electrical characteristics and corresponding transport models at single molecular junctions is crucial. There have been many reports on organic compounds-based single molecular junctions. However, organometallic…

材料科学 · 物理学 2024-09-04 Rajwinder Kaur , Savas Kaya , Konstantin P. Katin , Prakash Chandra Mondal

We demonstrate that a simple phenomenological approach can be used to simulate electronic conduction in molecular wires under thermal effects induced by the surrounding environment. This "Landauer-B\"uttiker's probe technique" can properly…

化学物理 · 物理学 2015-08-25 Michael Kilgour , Dvira Segal

An electron transport is studied in the system which consists of scanning tunneling microscopy-single molecule magnet-metal. Due to quantum tunneling of magnetization in single-molecule magnet, linear response conductance exhibits stepwise…

介观与纳米尺度物理 · 物理学 2009-11-10 Gwang-Hee Kim , Tae-Suk Kim

We overview nonequilibrium Green function combined with density functional theory (NEGF-DFT) modeling of independent electron and phonon transport in nanojunctions with applications focused on a new class of thermoelectric devices where a…

介观与纳米尺度物理 · 物理学 2012-04-19 Branislav K. Nikolic , Kamal K. Saha , Troels Markussen , Kristian S. Thygesen

We present a quaternion-inspired formalism specifically developed to evaluate the electric current that traverses a single molecule subjected to an externally applied voltage. The molecule of interest is covalently connected to two small…

介观与纳米尺度物理 · 物理学 2014-08-06 Augusto C. L. Moreira , Celso P. de Melo

We present a detailed numerical study of the electronic properties of single-layer graphene with resonant ("hydrogen") impurities and vacancies within a framework of noninteracting tight-binding model on a honeycomb lattice. The algorithms…

介观与纳米尺度物理 · 物理学 2010-09-29 Shengjun Yuan , Hans De Raedt , Mikhail I. Katsnelson

We present a technique to calculate the transport properties through one-dimensional models of molecular wires. The calculations include inelastic electron scattering due to electron-lattice interaction. The coupling between the electron…

凝聚态物理 · 物理学 2009-10-31 H. Ness , S. A. Shevlin , A. J. Fisher

The conductance of single molecule junctions is calculated using a Landauer approach combined to many-body perturbation theory MBPT) to account for electron correlation. The mere correction of the density-functional theory eigenvalues,…

介观与纳米尺度物理 · 物理学 2015-05-27 T. Rangel , A. Ferretti , P. E. Trevisanutto , V. Olevano , G. -M. Rignanese

Stable organic radicals integrated into molecular junctions represent a practical realization of the single-orbital Anderson impurity model. Motivated by recent experiments for perchlorotriphenylmethyl (PTM) molecules contacted to gold…

强关联电子 · 物理学 2018-10-02 W. H. Appelt , A. Droghetti , L. Chioncel , M. M. Radonjic , E. Munoz , S. Kirchner , D. Vollhardt , I. Rungger

In graphene nanoribbons (GNRs), the lateral confinement of charge carriers opens a band gap, the key feature to enable novel graphene-based electronics. Successful synthesis of GNRs has triggered efforts to realize field-effect transistors…

Non-equilibrium Green's functions (NEGF) formalism combined with extended Huckel (EHT) and charging model are used to study electrical conduction through single-molecule junctions. Analyzed molecular complex is composed of asymmetric…

介观与纳米尺度物理 · 物理学 2009-11-11 Kamil Walczak , Sergey Edward Lyshevski

We investigate the ballistic electron transport in a monolayer graphene with configurational averaged impurities, located between two clean graphene leads. It is shown that the electron transmission are strongly dependent on the…

介观与纳米尺度物理 · 物理学 2014-05-28 Juan Sebastian Ardenghi , Pablo Bechthold , Estela Gonzalez , Paula Jasen , Alfredo Juan

We study the interplay of intrinsic-electronic and environmental factors on long-range charge transport across molecular chains with up to $N\sim 80$ monomers. We describe the molecular electronic structure of the chain with a tight-binding…

介观与纳米尺度物理 · 物理学 2022-09-21 Francisco Lai Liang , Dvira Segal

Quantum transport through single molecules is very sensitive to the strength of the molecule-electrode contact. Here, we investigate the behavior of a model molecular junction weakly coupled to external electrodes in the case where charging…

介观与纳米尺度物理 · 物理学 2009-11-11 Bo Song , Dmitry A. Ryndyk , Gianaurelio Cuniberti

We use first-principle Quantum Monte-Carlo (QMC) simulations and numerical exact diagonalization to analyze the low-frequency charge carrier mobility within a simple tight-binding model of molecular organic semiconductors on a…

材料科学 · 物理学 2025-07-23 Pavel Buividovich , Johann Ostmeyer , Alessandro Troisi