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Using first-principles calculations we analyze the electronic transport properties of a recently proposed anthraquinone based electrochemical switch. Robust conductance on/off ratios of several orders of magnitude are observed due to…

介观与纳米尺度物理 · 物理学 2015-05-18 Troels Markussen , Jakob Schiøtz , Kristian S. Thygesen

Single-molecule electronics has been envisioned as the ultimate goal in the miniaturisation of electronic circuits. While the aim of incorporating single-molecule junctions into modern technology still proves elusive, recent developments in…

介观与纳米尺度物理 · 物理学 2017-11-22 Jakub K. Sowa , Jan A. Mol , G. Andrew D. Briggs , Erik M. Gauger

We present a simple model of electrical transport through a metal-molecule-metal nanojunction that includes charging effects as well as aspects of the electronic structure of the molecule. The interplay of a large charging energy and an…

介观与纳米尺度物理 · 物理学 2007-05-23 Matthias H. Hettler , Herbert Schoeller , Wolfgang Wenzel

We study single-electron transport in a three-ion molecule with strong uniaxial anisotropy and in the presence of a transverse magnetic field. Two magnetic ions are connected to each other through a third, nonmagnetic ion. The magnetic ions…

介观与纳米尺度物理 · 物理学 2014-05-12 Javier I. Romero , Eduardo R. Mucciolo

We report on inelastic electron tunneling spectroscopy measurements carried out on single molecules incorporated into a mechanically controllable break-junction of Au and Pt electrodes at low temperature. Here we establish a correlation…

介观与纳米尺度物理 · 物理学 2010-11-16 Youngsang Kim , Hyunwook Song , Florian Strigl , Hans-Fridtjof Pernau , Takhee Lee , Elke Scheer

Transistors, regardless of their size, rely on electrical gates to control the conductance between source and drain contacts. In atomic-scale transistors, this conductance is exquisitely sensitive to single electrons hopping via individual…

The electronic conduction of a novel, three-terminal molecular architecture, analogous to a heterojunction bipolar transistor is studied. In this architecture, two diode arms consisting of donor-acceptor molecular wires fuse through a ring,…

介观与纳米尺度物理 · 物理学 2009-11-13 Haiying He , Ravindra Pandey , Shashi P. Karna

We have measured quantum transport through an individual Fe$_4$ single-molecule magnet embedded in a three-terminal device geometry. The characteristic zero-field splittings of adjacent charge states and their magnetic field evolution are…

For adjusting the charging state of a molecular metal complex in the context of a density functional theory description of coherent electron transport through single molecule junctions, we correct for self interaction effects by fixing the…

介观与纳米尺度物理 · 物理学 2015-06-12 Georg Kastlunger , Robert Stadler

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

Tunneling of electrons through rotor-stator anthracene aldehyde molecular interfaces is studied with a combined ab initio and model approach. Molecular electronic structure calculated from first principles is utilized to model different…

化学物理 · 物理学 2016-05-27 Irina Petreska , Vladimir Ohanesjan , Ljupco Pejov , Ljupco Kocarev

The thermoelectric transport through a molecular bridge is discussed, with an emphasis on the effects of inelastic processes of the transport electrons caused by the coupling to the vibrational modes of the molecule. In particular it is…

介观与纳米尺度物理 · 物理学 2015-03-17 O. Entin-Wohlman , Y. Imry , A. Aharony

Using a first principles approach, we study the electron transport properties of a new class of molecular wires containing fluorenone units, whose features open up new possibilities for controlling transport through a single molecule. We…

介观与纳米尺度物理 · 物理学 2007-05-23 C. J. Lambert , I. M. Grace , T. Papadopoulos

Graphene electrodes are promising candidates to improve reproducibility and stability in molecular electronics through new electrode-molecule anchoring strategies. Here we report sequential electron transport in few-layer graphene…

Electron transport is theoretically investigated in a molecular device made of anthracene molecule attached to the electrodes by thiol end groups in two different configurations (para and meta, respectively). Molecular system is described…

介观与纳米尺度物理 · 物理学 2007-05-23 Kamil Walczak

Understanding how the mechanism of charge transport through molecular tunnel junctions depends on temperature is crucial to control electronic function in molecular electronic devices. With just a few systems investigated as a function of…

介观与纳米尺度物理 · 物理学 2016-05-27 Alvar R. Garrigues , Lejia Wang , Enrique del Barco , Christian A. Nijhuis

Molecular electronics is a fascinating area of research with the ability to tune device properties by a chemical tailoring of organic molecules. However, molecular electronics devices often suffer from dispersion and lack of reproducibility…

介观与纳米尺度物理 · 物理学 2013-02-11 Nicolas Clement , David Guerin , Stephane Pleutin , Sylvie Godey , Dominique Vuillaume

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…

材料科学 · 物理学 2007-05-23 San-Huang Ke , Harold U. Baranger , Weitao Yang

We measure the low bias conductance of a series of substituted benzene diamine molecules while breaking a gold point contact in a solution of the molecules. Transport through these substituted benzenes is by means of nonresonant tunneling…

The effect on molecular transport due to chemical modification of the metal-molecule interface is investigated, using as an example the prototypical molecular device formed by attaching a p-disubstituted benzene molecule onto two gold…

介观与纳米尺度物理 · 物理学 2009-11-10 Yongqiang Xue , Mark A. Ratner
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