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相关论文: Shot noise suppression in quasi one-dimensional Fi…

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We present an expression for the shot noise power spectral density in quasi-one dimensional conductors electrostatically controlled by a gate electrode, that includes the effects of Coulomb interaction and of Pauli exclusion among charge…

介观与纳米尺度物理 · 物理学 2015-05-13 Alessandro Betti , Gianluca Fiori , Giuseppe Iannaccone

We propose a quantum mechanical approach to noise in resonant tunneling structures, that can be applied in the whole range of transport regimes, from completely coherent to completely incoherent. In both limiting cases, well known results…

凝聚态物理 · 物理学 2009-10-28 G. Iannaccone , M. Macucci , B. Pellegrini

We work out a semiclassical theory of shot noise in ballistic n+-i-n+ semiconductor structures aiming at studying two fundamental physical correlations coming from Pauli exclusion principle and long range Coulomb interaction. The theory…

介观与纳米尺度物理 · 物理学 2009-11-07 G. Gomila , I. R. Cantalapiedra , T. Gonzalez , L. Reggiani

A theory is presented for the universal reduction of shot noise by Coulomb repulsion, which was observed in computer simulations of a disordered non-degenerate electron gas by Gonzalez et al. (cond-mat/9803372). The universality of the…

介观与纳米尺度物理 · 物理学 2007-05-23 C. W. J. Beenakker

We present a theoretical investigation of shot-noise suppression due to long-range Coulomb interaction in nondegenerate diffusive conductors. Calculations make use of an ensemble Monte Carlo simulator self-consistently coupled with a…

介观与纳米尺度物理 · 物理学 2009-10-31 T. Gonzalez , J. Mateos , D. Pardo , O. M. Bulashenko , L. Reggiani

We have analyzed the shot noise of electron emission under strong applied electric fields within the Landauer-Buttiker scheme. In contrast to the previous studies of vacuum-tube emitters, we show that in new generation electron emitters,…

介观与纳米尺度物理 · 物理学 2007-05-23 O. M. Bulashenko , J. M. Rubi

The low-frequency shot noise properties of two electrostatically coupled semiconductor quantum dot states which are connected to emitter/collector contacts are studied. A master equation approach is used to analyze the bias voltage…

介观与纳米尺度物理 · 物理学 2009-11-10 G. Kiesslich , A. Wacker , E. Schoell

An on-chip detection scheme for high frequency signals is used to detect noise generated by a quantum dot formed in a single wall carbon nanotube. The noise detection is based on photon assisted tunneling in a…

介观与纳米尺度物理 · 物理学 2009-11-11 E. Onac , F. Balestro , B. Trauzettel , C. F. J. Lodewijk , L. P. Kouwenhoven

We present a microscopic analysis of shot-noise suppression due to long-range Coulomb interaction in semiconductor devices under ballistic transport conditions. An ensemble Monte Carlo simulator self-consistently coupled with a Poisson…

介观与纳米尺度物理 · 物理学 2009-10-30 T. Gonzalez , O. M. Bulashenko , J. Mateos , D. Pardo , L. Reggiani

We study intrinsic noise of current in a superconducting single-electron transistor, taking into account both coherence effects and Coulomb interaction near a Cooper-pair resonance. Due to this interplay, the statistics of tunneling events…

介观与纳米尺度物理 · 物理学 2009-11-07 Mahn-Soo Choi , Francesco Plastina , Rosario Fazio

We study electron transport through a quantum dot, connected to non-magnetic leads, in a magnetic field. A super-Poissonian electron noise due to the effects of both interacting localized states and dynamic channel blockade is found when…

介观与纳米尺度物理 · 物理学 2009-11-13 Shi-Hua Ouyang , Chi-Hang Lam , J. Q. You

We identify a new shot noise suppression mechanism in a thin (~100 nm) heterostructure avalanche photodiode. In the low-gain regime the shot noise is suppressed due to temporal correlations within amplified current pulses. We demonstrate in…

计算物理 · 物理学 2015-06-26 Feng Ma , Shuling Wang , Joe C. Campbell

We investigate the zero-frequency shot noise of electronic tunneling through a single quantum dot (SQD) and coherently coupled quantum dots (CQD) taking into account the Coulomb interaction. Within Hartree-Fock approximation, the analytical…

介观与纳米尺度物理 · 物理学 2014-12-11 Bo Xiong , Guo-Hui Ding , Bing Dong

We implement a quantum approach which includes long range Coulomb interaction and investigate current voltage characteristics and shot noise in double barrier resonant diodes. Theory applies to the region of low applied voltages up to the…

介观与纳米尺度物理 · 物理学 2007-05-23 V. Ya. Aleshkin , L. Reggiani , N. V. Alkeev , V. E. Lyubchenko , C. N. Ironside , J. M. L. Figueiredo , C. R. Stanley

We predict shot noise enhancement in defect-free carbon nanotube field-effect transistors through a numerical investigation based on the self-consistent solution of the Poisson and Schrodinger equations within the non-equilibrium Green…

介观与纳米尺度物理 · 物理学 2015-05-18 Alessandro Betti , Gianluca Fiori , Giuseppe Iannaccone

We have investigated shot noise in a 6-nm-diameter, semiconducting multiwalled carbon nanotube FET at 4.2 K over the frequency range 600 - 950 MHz. We find a transconductance of 3 - 3.5 $\mu$S for optimal positive and negative source-drain…

介观与纳米尺度物理 · 物理学 2015-06-25 F. Wu , T. Tsuneta , R. Tarkiainen , D. Gunnarsson , T. H. Wang , P. J. Hakonen

Feedback control of quantum mechanical systems is rapidly attracting attention not only due to fundamental questions about quantum measurements but also because of its novel applications in many fields in physics. Quantum control has been…

介观与纳米尺度物理 · 物理学 2017-11-15 T. Wagner , P. Strasberg , J. C. Bayer , E. P. Rugeramigabo , T. Brandes , R. J. Haug

We report on shot noise measurements in carbon nanotube based Fabry-Perot electronic interferometers. As a consequence of quantum interferences, the noise power spectral density oscillates as a function of the voltage applied to the gate…

介观与纳米尺度物理 · 物理学 2015-06-25 L. G. Herrmann , T. Delattre , P. Morfin , J. -M. Berroir , B. Plaçais , D. C. Glattli , T. Kontos

We present a Monte Carlo analysis of shot-noise suppression due to long-range Coulomb interaction in semiconductor samples under a crossover between diffusive and ballistic transport regimes. By varying the mean time between collisions we…

介观与纳米尺度物理 · 物理学 2009-10-30 T. Gonzalez , O. M. Bulashenko , J. Mateos , D. Pardo , L. Reggiani , J. M. Rubi

A general formula for current noise in a two-terminal ballistic nondegenerate conductor under the action of long-range Coulomb correlations has been derived. The noise reduction factor (in respect to the uncorrelated value) is obtained for…

介观与纳米尺度物理 · 物理学 2007-05-23 O. M. Bulashenko , J. M. Rubi , V. A. Kochelap
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