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The quantum tunneling effects between two metallic plates are studied using the time dependent density functional theory. Results show that the tunneling is mainly dependent on the separation and the initial local field of the interstice…

介观与纳米尺度物理 · 物理学 2015-05-13 Li Mao , Zhipeng Li , Biao Wu , Hongxing Xu

We investigate how temperature affects transport through large networks of nonlinear conductances with distributed thresholds. In monolayers of weakly-coupled gold nanocrystals, quenched charge disorder produces a range of local thresholds…

介观与纳米尺度物理 · 物理学 2007-05-23 Raghuveer Parthasarathy , Xiao-Min Lin , Klara Elteto , T. F. Rosenbaum , Heinrich M. Jaeger

Recent years have shown steady progress in research towards molecular electronics [1,2], where molecules have been investigated as switches [3-5], diodes [6], and electronic mixers [7]. In much of the previous work a Scanning Tunnelling…

介观与纳米尺度物理 · 物理学 2009-11-07 R. H. M. Smit , Y. Noat , C. Untiedt , N. D. Lang , M. van Hemert , J. M. van Ruitenbeek

Charging a nano-scale oscillator by single electron tunneling leads to an effective double-well potential due to image charges. We combine exact numerical diagonalizations with generalized Master equations and show that the resulting…

介观与纳米尺度物理 · 物理学 2009-11-13 Hannes Hübener , Tobias Brandes

Myoglobin single-electron transistors were investigated using nanometer- gap platinum electrodes fabricated by electromigration at cryogenic temperatures. Apomyoglobin (myoglobin without heme group) was used as a reference. The results…

介观与纳米尺度物理 · 物理学 2013-12-16 Debin Li , Peter M. Gannet , David Lederman

We investigate electron transport through a mono-atomic wire which is tunnel coupled to two electrodes and also to the underlying substrate. The setup is modeled by a tight-binding Hamiltonian and can be realized with a scanning tunnel…

介观与纳米尺度物理 · 物理学 2010-11-25 Tomasz Kwapinski , Sigmund Kohler , Peter Hanggi

We study linear electron transport through a single-molecule magnet (SMM) and the interplay of its anisotropic spin with quantized vibrational distortions of the molecule. We show that, despite the longitudinal anisotropy barrier and small…

介观与纳米尺度物理 · 物理学 2011-02-15 F. May , M. R. Wegewijs , W. Hofstetter

The single-particle and interaction effects on the cohesion, electronic transport, and some magnetic properties of metallic nanocylinders have been studied at finite voltages by using a generalized mean-field electron model. The…

介观与纳米尺度物理 · 物理学 2009-11-11 C. -H. Zhang

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…

The combined effect of electron-electron interactions and spin-orbit scattering in metal nanoparticles can be studied by measuring splitting of electron levels in magnetic field ($g$ factors) in tunneling spectroscopy experiments. Using…

介观与纳米尺度物理 · 物理学 2007-05-23 Denis A. Gorokhov , Piet W. Brouwer

In single electron tunneling through clean, suspended carbon nanotube devices at low temperature, distinct switching phenomena have regularly been observed. These can be explained via strong interaction of single electron tunneling and…

介观与纳米尺度物理 · 物理学 2015-09-24 D. R. Schmid , P. L. Stiller , C. Strunk , A. K. Hüttel

We study the current and shot noise in a linear array of metallic nanoparticles taking explicitly into consideration their discrete electronic spectra. Phonon assisted tunneling and dissipative effects on single nanoparticles are…

介观与纳米尺度物理 · 物理学 2009-11-11 Stefan Semrau , Herbert Schoeller , Wolfgang Wenzel

By first lithographically fabricating contact electrodes and then as last step growing carbon nanotubes with chemical vapour deposition across the ready-made chip, many potential contamination mechanisms for nanotube devices can be avoided.…

介观与纳米尺度物理 · 物理学 2011-10-26 A. K. Huettel , H. B. Meerwaldt , G. A. Steele , M. Poot , B. Witkamp , L. P. Kouwenhoven , H. S. J. van der Zant

Electron tunneling through mesoscopic metallic grains can be treated perturbatively only provided the tunnel junction conductances are sufficiently small. If it is not the case, fluctuations of the grain charge become strong. As a result…

凝聚态物理 · 物理学 2009-10-28 D. S. Golubev , A. D. Zaikin

We demonstrate the effect of single-electron tunneling (SET) through a carbon nanotube quantum dot on its nanomechanical motion. We find that the frequency response and the dissipation of the nanoelectromechanical system (NEMS) to SET…

介观与纳米尺度物理 · 物理学 2012-05-10 Marc Ganzhorn , Wolfgang Wernsdorfer

Electronic devices composed of single molecules constitute the ultimate limit in the continued downscaling of electronic components. A key challenge for single-molecule electronics is to control the temperature of these junctions.…

介观与纳米尺度物理 · 物理学 2016-04-08 Jacob Lykkebo , Giuseppe Romano , Alessio Gagliardi , Alessandro Pecchia , Gemma C. Solomon

The ability to electrically-drive spin excitations in molecules with magnetic anisotropy is key for high-density storage and quantum-information technology. Electrons, however, also tunnel via the vibrational excitations unique to a…

A microscopic physical analysis of the various resistive effects involved in the electronic detection of single biomolecules in a nanopore of a MoS2 nanoribbon is presented. The analysis relies on a combined experimental-theoretical…

介观与纳米尺度物理 · 物理学 2020-04-23 Mingye Xiong , Michael Graf , Nagendra Athreya , Aleksandra Radenovic , Jean-Pierre Leburton

We study single electron transport across a single Bi dopant in a Silicon Nanotransistor to assess how the strong hyperfine coupling with the Bi nuclear spin $I=9/2$ affects the transport characteristics of the device. In the sequential…

介观与纳米尺度物理 · 物理学 2013-08-19 F. Delgado , R. Aguado , J. Fernández-Rossier

In many composites the electrical transport takes place only by tunneling between isolated particles. For a long time it was quite a puzzle how, in spite of the incompatibility of tunneling and percolation networks, these composites conform…

无序系统与神经网络 · 物理学 2009-11-10 D. Toker , D. Azulay , N. Shimoni , I. Balberg , O. Millo