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We report electronic transport measurements of single-molecule transistor devices incorporating bipyridyl-dinitro oligophenylene-ethynylene dithiol (BPDN-DT), a molecule known to exhibit conductance switching in other measurement…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Z. K. Keane , J. W. Ciszek , J. M. Tour , D. Natelson

A class of bistable "stator-rotor" molecules is proposed, where a stationary bridge (stator) connects the two electrodes and facilitates electron transport between them. The rotor part, which has a large dipole moment, is attached to an…

Soft Condensed Matter · Physics 2009-11-07 P. E. Kornilovitch , A. M. Bratkovsky , R. S. Williams

Electrically stimulated switching of a charge injection barrier at the interface between an organic semiconductor and an electrode modified with a disordered monolayer (DM) is studied by using various benzenethiol derivatives as DM…

Materials Science · Physics 2016-08-04 Ryo Nouchi , Takaaki Tanimoto

An electrode contact-related mechanism for the operational instability of organic electronic devices is proposed and confirmed via observation of a water-induced change in charge-injection barrier eights at the…

Applied Physics · Physics 2020-01-28 Ryo Nouchi

Molecular-scale components are expected to be central to nanoscale electronic devices. While molecular-scale switching has been reported in atomic quantum point contacts, single-molecule junctions provide the additional flexibility of…

Transport through molecular contacts with a sluggish intramolecular vibrational mode strongly coupled to excess charges is studied far from equilibrium. A Born-Oppenheimer approximation in steady state reveals voltage dependent energy…

Mesoscale and Nanoscale Physics · Physics 2012-06-27 Lars Kecke , Joachim Ankerhold

We study the orientational dynamics of superparamagnetic colloidal dimers that carry both an induced magnetic moment, proportional to the applied field, and an effective permanent moment. In a static, uniform magnetic field, dimers that are…

Soft Condensed Matter · Physics 2026-04-17 James R. N. Tett , Finlay Johnston , Brennan Sprinkle , Alice L. Thorneywork

We investigate the steady-state electronic transport through a suspended dimer molecule coupled to leads. When strongly coupled to a vibrational mode, the electron transport is enhanced at the phonon resonant frequency and higher-order…

Mesoscale and Nanoscale Physics · Physics 2013-02-18 D. H. Santamore , Neill Lambert , Franco Nori

The transport properties of a octane-dithiol (ODT) molecule coupled to Au(001) leads are analyzed using density functional theory and non-equilibrium Green functions. It is shown that a symmetric molecule can turn into a diode under…

Mesoscale and Nanoscale Physics · Physics 2010-02-09 Tomasz Kostyrko , Víctor M. García-Suárez , Colin J. Lambert , Bogdan R. Bułka

Tunneling spectroscopy measurements have been carried out on a single molecule device formed by two Pd nanocrystals (dia, $\sim$5 nm) electronically coupled by a conducting molecule, dimercaptodiphenylacetylene. The I-V data, obtained by…

Materials Science · Physics 2007-05-23 Ved Varun Agrawal , Reji Thomas , G. U. Kulkarni , C. N. R. Rao

We investigate gold-4,4'-bipyridine-gold single-molecule junctions with the mechanically controllable break junction technique at cryogenic temperature ($T=4.2\,\text{K}$). We observe bistable probabilistic conductance switching between the…

Mesoscale and Nanoscale Physics · Physics 2020-09-15 Gréta Mezei , Zoltán Balogh , András Magyarkuti , András Halbritter

We show theoretically that an open-dissipative polariton condensate confined within a trapping potential and driven by an incoherent pumping scheme gives rise to bistability between odd and even modes of the potential. Switching from one…

Quantum Gases · Physics 2015-12-10 Helgi Sigurdsson , Ivan A. Shelykh , Timothy C. H. Liew

Ab-initio total energy calculations reveal benzene-dithiolate (BDT) molecules on a gold surface, contacted by a monoatomic gold STM tip to have two classes of low energy conformations with differing symmetries. Lateral motion of the tip or…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Eldon G. Emberly , George Kirczenow

We use a one-dimensional polariton fluid in a semiconductor microcavity to explore the rich nonlinear dynamics of counter-propagating interacting Bose fluids. The intrinsically driven-dissipative nature of the polariton fluid allows to use…

When circularly polarized light is scattered from a rotating target, a rotational Doppler shift (RDS) emerges from an exchange of angular momentum between the spinning object and the electromagnetic field. Here, we used coherently spinning…

Recently, rectifying direction inversion has been observed in dipyrimidinyl-diphenyl (PMPH) diblock molecular wire [J. Am. Chem. Soc. (2005) 127, 10456], and a protonation mechanism was suggested to explain this interesting phenomena. In…

Materials Science · Physics 2008-12-14 Zhenyu Li

Transmission and reflection of an electromagnetic pulse through a dielectric slab doped with the quantum dot molecules is investigated. It is shown that the transmitted and reflected pulses depend on the inter-dot tunneling effect and can…

Mesoscale and Nanoscale Physics · Physics 2013-12-11 Lida Ebrahimi Zohravi , Mohammad Mahmoudi

Formation of a magnetic hysteresis loop with respect to a bias voltage is investigated theoretically in a spin-valve device based on a single magnetic molecule. We consider a device consisting of two ferromagnetic electrodes bridged by a…

Mesoscale and Nanoscale Physics · Physics 2018-05-09 Anna Płomińska , Maciej Misiorny , Ireneusz Weymann

Molecular spintronics is made possible by the coupling between electronic configuration and magnetic po- larization of the molecules. For control and application of the individual molecular states it is necessary to both read and write…

Mesoscale and Nanoscale Physics · Physics 2016-04-27 T. Saygun , J. Bylin , H. Hammar , J. Fransson

Developing electronic devices capable of emulating biological functions is essential for advancing brain-inspired computation paradigms such as neuromorphic computing. In recent years, two-dimensional materials have emerged as promising…

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