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Charge transfer is a fundamental process that underlies a multitude of phenomena in chemistry and biology. Recent advances in observing and manipulating charge and heat transport at the nanoscale, and recently developed techniques for…

介观与纳米尺度物理 · 物理学 2016-07-26 Galen T. Craven , Abraham Nitzan

We report unexpectedly large noise in the current from nanopatterned PbS quantum dot films. The noise is proportional to the current when the latter is varied by changing the source-drain bias, gate voltage or temperature. The spectral…

介观与纳米尺度物理 · 物理学 2015-01-09 Tamar S. Mentzel , Nirat Ray , Neal E. Staley , Marc A. Kastner , Darcy D. W. Grinolds , Moungi G. Bawendi

We review the latest progress in understanding the fundamental noise properties of a coherent single electron emitter known as the mesoscopic capacitor. The system consists of a sub-micron cavity connected to a two-dimensional electron gas…

介观与纳米尺度物理 · 物理学 2011-02-14 Mathias Albert , Christian Flindt , Markus Büttiker

We have studied the origin of excess noise in superconducting transition-edge sensors (TES) with several different detector designs. We show that most of the observed noise and complex impedance features can be explained by a thermal model…

超导电性 · 物理学 2015-03-19 K. M. Kinnunen , M. R. J. Palosaari , I. J. Maasilta

Scattering of charge carriers and flicker noise in electrical transport are the central performance limiting factors in electronic devices, but their microscopic origin in molybdenum disulphide~(MoS$_2$)-based field effect transistors…

介观与纳米尺度物理 · 物理学 2014-03-14 Subhamoy Ghatak , Sumanta Mukherjee , Manish Jain , D. D. Sarma , Arindam Ghosh

Experiments on the distributions of switching currents in Josephson junctions are sensitive probes of the mechanism by which a junction changes abruptly to a finite voltage state. At low temperatures data exhibit smooth and gradual…

超导电性 · 物理学 2021-08-19 James A. Blackburn

A semiclassical formalism is used to investigate the transistor-like behavior of ultracold atoms in a triple-well potential. Atom current flows from the source well, held at fixed chemical potential and temperature, into an empty drain…

原子物理 · 物理学 2016-02-17 Seth C. Caliga , Cameron J. E. Straatsma , Alex A. Zozulya , Dana Z. Anderson

The charge transport and the noise of a quantum wire network, made of three semi-infinite external leads attached to a ring crossed by a magnetic flux, are investigated. The system is driven away from equilibrium by connecting the external…

强关联电子 · 物理学 2015-06-04 Vincent Caudrelier , Mihail Mintchev , Eric Ragoucy

Gradients of voltage, pressure, temperature, and salinity can transport objects in micro- and nanofluidic systems by well known mechanisms. Here we report the discovery of a transport effect driven by viscosity gradients, which cause an…

流体动力学 · 物理学 2018-11-20 Benjamin Wiener , Derek Stein

Microscopic current fluctuations are inseparable from conductance. We give an integral account of both quantized conductance and nonequilibrium thermal noise in one-dimensional ballistic wires. Our high-current noise theory opens a very…

介观与纳米尺度物理 · 物理学 2007-05-23 Frederick Green , Mukunda P Das

We consider the problem of electron transport along a one-dimensional disordered multiple-scattering conductor, and study the electron density for all the electronic levels. A model is proposed for the reduced density matrix of the system…

无序系统与神经网络 · 物理学 2023-03-14 Gerardo Rivas , Miztli Yepez , Pier A. Mello

A theory is developed to describe the coupled transport of energy and charge in networks of electron donor-acceptor sites which are seated in a thermally heterogeneous environment, where the transfer kinetics are dominated by Marcus-type…

介观与纳米尺度物理 · 物理学 2019-08-02 Galen T. Craven , Abraham Nitzan

This letter investigates the bias-dependent low frequency noise of single layer graphene field-effect transistors. Noise measurements have been conducted with electrolyte-gated graphene transistors covering a wide range of gate and drain…

介观与纳米尺度物理 · 物理学 2018-10-22 Nikolaos Mavredakis , Ramon Garcia Cortadella , Andrea Bonaccini Calia , Jose A. Garrido , David Jiménez

Variability of low frequency noise (LFN) in MOSFETs is bias-dependent. Moderate- to large-sized transistors commonly used in analog/RF applications show 1/f-like noise spectra, resulting from the superposition of random telegraph noise…

介观与纳米尺度物理 · 物理学 2020-09-03 Nikolaos Mavredakis , Nikolaos Makris , Predrag Habas , Matthias Bucher

Two-dimensional electron or hole systems in semiconductors offer the unique opportunity to investigate the physics of strongly interacting fermions. We have measured the 1/f resistance noise of two-dimensional hole systems in high mobility…

无序系统与神经网络 · 物理学 2007-05-23 G. Deville , R. Leturcq , D. L'Hote , R. Tourbot , C. J. Mellor , M. Henini

Quantum dots are frequently used as charge sensitive devices in low temperature experiments to probe electric charge in mesoscopic conductors where the current running through the quantum dot is modulated by the nearby charge environment.…

Using a one-dimensional tight-binding Anderson model, we study a disordered nanowire in the presence of an external gate which can be used for depleting its carrier density (field effect transistor device configuration). In this first…

介观与纳米尺度物理 · 物理学 2014-05-01 Riccardo Bosisio , Geneviève Fleury , Jean-Louis Pichard

An extension of fluctuation-dissipation theorem is used to derive a "speed limit" theorem for nonlinear electronic devices. This speed limit provides a lower bound on the dissipation that is incurred when transferring a given amount of…

统计力学 · 物理学 2025-06-23 Léopold Van Brandt , Jean-Charles Delvenne

We determine charge transfer statistics in a quantum conductor driven by a time-dependent voltage and identify the elementary transport processes. At zero temperature unidirectional and bidirectional single charge transfers occur. The…

介观与纳米尺度物理 · 物理学 2008-12-10 Mihajlo Vanevic , Yuli V. Nazarov , Wolfgang Belzig

We study the effect of the domain wall on electronic transport properties in wire of ferromagnetic 3$d$ transition metals based on the linear response theory. We considered the exchange interaction between the conduction electron and the…

介观与纳米尺度物理 · 物理学 2009-10-31 Gen Tatara