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We present a simple and reliable method for making electrical contacts to small organic molecules with thiol endgroups. Nanometer-scale gaps between metallic electrodes have been fabricated by passing a large current through a…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Subhasis Ghosh , Henny Halimun , Jaewon Choi , Saurabh Lodha , David Janes

We investigate the electron-transport properties of ethyne-bridged diphenyl zinc-porphyrin molecules suspended between gold (111) electrodes by first-principles calculations within the framework of density functional theory. It is found…

Materials Science · Physics 2024-01-09 Huy Duy Nguyen , Tomoya Ono

In this work, we propose a strategy to sense quantitatively and specifically cations, out of a single organic electrochemical transistor (OECT) device exposed to an electrolyte. From the systematic study of six different chloride salts over…

Applied Physics · Physics 2018-03-29 Sebastien Pecqueur , David Guerin , Dominique Vuillaume , Fabien Alibart

Using single-crystal transistors, we have performed a systematic experimental study of electronic transport through oxidized copper/rubrene interfaces as a function of temperature and bias. We find that the measurements can be reproduced…

Materials Science · Physics 2009-11-13 A. S. Molinari , I. Gutierrez Lezama , P. Parisse , T. Takenobu , Y. Iwasa , A. F. Morpurgo

We investigate electrical conduction through individual oligopeptide molecules thiol-bonded between gold nanocontacts using ab initio and semi-empirical techniques. Our theory explains for the first time these molecules' experimentally…

Mesoscale and Nanoscale Physics · Physics 2008-04-15 David M. Cardamone , George Kirczenow

The present paper gives an elaborate theoretical description of a new molecular charge transport mechanism applying to a single molecule trapped between two macroscopic electrodes in a solid state device. It is shown by a Hubbard type model…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Per Hedegard , Thomas Bjornholm

Electron and hole separate-path transport is theoretically found in the pi-stacked organic layers and columns. This effect might be a solution for the charge recombination problem. The building molecules, named…

Materials Science · Physics 2016-05-13 Malgorzata Wawrzyniak-Adamczewska , Malgorzata Wierzbowska

We present measurements of magnetic tunnel junctions made using a self-assembled-monolayer molecular barrier. Ni/octanethiol/Ni samples were fabricated in a nanopore geometry. The devices exhibit significant changes in resistance as the…

Mesoscale and Nanoscale Physics · Physics 2010-10-05 J. R. Petta , S. K. Slater , D. C. Ralph

We report on a new class of hybrid electronic devices based on a DNA nucleoside (deoxyguanosine lipophilic derivative) whose assembled polymeric ribbons interconnect a submicron metallic gate. The device exhibits large conductivity at room…

Soft Condensed Matter · Physics 2007-05-23 R. Rinaldi , E. Branca , R. Cingolani , R. Di Felice , E. Molinari , S. Masiero , G. P. Spada , G. Gottarelli , A. Garbesi

The double carrier transport has been observed in thin film black phosphorus (BP) field effect transistor (FET) devices in highly electron doped region. BP thin films with typical thickness of 15 nm were encapsulated by hexagonal boron…

Mesoscale and Nanoscale Physics · Physics 2018-11-08 Kohei Hirose , Toshihito Osada , Kazuhito Uchida , Toshihiro Taen , Kenji Watanabe , Takashi Taniguchi , Yuichi Akahama

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…

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…

Mesoscale and Nanoscale Physics · Physics 2023-08-11 Koushik R. Das , Sudipta Dutta

We report experiment and theory on an ambipolar gate-controlled Si-vacuum field effect transistor (FET) where we study electron and hole (low-temperature 2D) transport in the same device simply by changing the external gate voltage to tune…

Mesoscale and Nanoscale Physics · Physics 2015-08-04 Binhui Hu , M. M. Yazdanpanah , B. E. Kane , E. H. Hwang , S. Das Sarma

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…

Mesoscale and Nanoscale Physics · Physics 2010-05-25 Paramita Dutta , Santanu K. Maiti , S. N. Karmakar

Topological insulators insulate in the bulk but exhibit robust conducting edge states protected by the topology of the bulk material. Here, we design a colloidal topological insulator and demonstrate experimentally the occurrence of edge…

The transport properties of interacting electrons for which the spin degree of freedom is taken into account are numerically studied for small two dimensional diffusive clusters. On-site electron-electron interactions tend to delocalize the…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Richard Berkovits , Jan W. Kantelhardt

We study the electronic transport properties of dual-gated bilayer graphene devices. We focus on the regime of low temperatures and high electric displacement fields, where we observe a clear exponential dependence of the resistance as a…

Mesoscale and Nanoscale Physics · Physics 2010-10-12 Thiti Taychatanapat , Pablo Jarillo-Herrero

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

Experimental realization of two-dimensional boron sheets was reported very recently by Feng et. al. using molecular beam epitaxy on silver (111) surface. These boron sheets possess promising electronic and transport properties. We performed…

Mesoscale and Nanoscale Physics · Physics 2018-10-17 Vivekanand Shukla , Anton Grigoriev , Naresh K. Jena , Rajeev Ahuja

We present a two-dimensional electron heterostructure field effect device of simplistic design and ease of fabrication that displays high mobility electron transport. This is accomplished using a high efficacy contacting scheme and simple…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 R. L. Willett , L. N. Pfeiffer , K. W. West