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Using a first principles approach, we study the electron transport properties of two molecules of length 2.5nm which are the building blocks for a new class of molecular wires containing fluorenone units. We show that the presence of side…

材料科学 · 物理学 2009-11-11 Theodoros Papadopoulos , Iain Grace , Colin Lambert

We explore electron transport properties for the model of benzene-1, 4-dithiolate (BDT) molecule and for some other geometric models of benzene molecule attached to two semi-infinite one-dimensional metallic electrodes using the Green's…

介观与纳米尺度物理 · 物理学 2010-04-13 Santanu K. Maiti

We explore electron transport properties in molecular wires made of heterocyclic molecules (pyrrole, furan and thiophene) by using the Green's function technique. Parametric calculations are given based on the tight-binding model to…

介观与纳米尺度物理 · 物理学 2009-09-13 Santanu K. Maiti , S. N. Karmakar

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…

介观与纳米尺度物理 · 物理学 2009-11-06 Santanu K. Maiti

We propose a mechanism which allows one to control the transmission of single electrons through a molecular junction. The principle utilizes the emergence of transmission sidebands when molecular vibrational modes are coupled to the…

介观与纳米尺度物理 · 物理学 2010-03-26 Thomas Olsen , Jakob Schiøtz

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

Electronic conductance through a single molecule is sensitive towards its structural orientation between two electrodes, owing to the distribution of molecular orbitals and their coupling to the electrode levels, that are governed by…

介观与纳米尺度物理 · 物理学 2023-08-11 Koushik R. Das , Sudipta Dutta

We theoretically investigate the transport properties of a molecule embedded in one arm of a mesoscopic Aharonov-Bohm interferometer. Due to the presence of phonons the molecule level position ($\epsilon_d$) and the electron-electron…

介观与纳米尺度物理 · 物理学 2015-05-18 Jong Soo Lim , Rosa Lopez , Gloria Platero , Pascal Simon

Controlling the spin transport at the single-molecule level, especially without the use of ferromagnetic contacts, becomes a focus of research in spintronics. Inspired by the progress on atomic-level molecular synthesis, through…

原子与分子团簇 · 物理学 2022-11-17 Yan-Dong Guo , Xue Zhao , Hong-Ru Zhao , Li Yang , Li-Yan Lin , Yue Jiang , Dan Ma , Yu-Ting Chen , Xiao-Hong Yan

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

The study of electron transport through single molecules is essential to the development of molecular electronics. Indeed, trends in electronic conductance through organic nanowires have emerged with the increasing reliability of electron…

介观与纳米尺度物理 · 物理学 2007-05-24 Jordan R. Quinn , Frank W. Foss , Latha Venkataraman , Mark S. Hybertsen , Ronald Breslow

We do parametric calculations to elucidate multi-terminal electron transport properties through a molecular system where a single phenalenyl molecule is attached to semi-infinite one-dimensional metallic leads. A formalism based on the…

介观与纳米尺度物理 · 物理学 2010-05-25 Paramita Dutta , Santanu K. Maiti , S. N. Karmakar

We analyze the electronic transport through a model spin-1 molecule as a function of temperature, magnetic field and bias voltage. We consider the effect of magnetic anisotropy, which can be generated experimentally by stretching the…

强关联电子 · 物理学 2011-06-24 P. S. Cornaglia , P. Roura Bas , A. A. Aligia , C. A. Balseiro

Controlling electronic transport through a single-molecule junction is crucial for molecular electronics or spintronics. In magnetic molecular devices, the spin degree-of-freedom can be used to this end since the magnetic properties of the…

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…

The low-temperature transport properties of a molecule are studied in the field-effect transitor geometry. The molecule has an internal mechanical mode that modulates its electronic levels and renormalizes both the interactions and the…

强关联电子 · 物理学 2008-01-23 P. S. Cornaglia , Gonzalo Usaj , C. A. Balseiro

The ability to control the conductance of single molecules will have a major impact in nanoscale electronics. Azobenzene, a molecule that changes conformation as a result of a trans/cis transition when exposed to radiation, could form the…

介观与纳米尺度物理 · 物理学 2008-11-26 Miriam del Valle , Rafael Gutierrez , Carlos Tejedor , Gianaurelio Cuniberti

Electron transport properties of a biphenyl molecule are studied based on the Green's function formalism. The molecule is sandwiched between two metallic electrodes, where each benzene ring is threaded by a magnetic flux $\phi$. The results…

介观与纳米尺度物理 · 物理学 2009-09-15 Santanu K. Maiti

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

Using a first principles approach to electron transport, we calculate the electrical and thermoelectrical transport properties of a series of molecular wires containing benzo-difuran subunits. We demonstrate that the side groups introduce…

介观与纳米尺度物理 · 物理学 2014-05-15 Csaba G. Péterfalvi , Iain Grace , Dávid Zs. Manrique , Colin J. Lambert
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