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相关论文: Full Current Statistics in Diffusive Normal-Superc…

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We study the statistics of charge transport in a chaotic cavity attached to external reservoirs by two openings of different size which transmit non-equal number of quantum channels. An exact formula for the cumulant generating function has…

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

We study theoretically the Josephson effect in junctions based on unconventional superconductors with diffusive barriers, using the quasiclassical Green's function formalism. Generalized boundary conditions at junction interfaces applicable…

超导电性 · 物理学 2009-11-11 T. Yokoyama , Y. Tanaka , A. A. Golubov

We study theoretically the full counting statistics of electron transport through side-coupled double quantum dot (QD) based on an efficient particle-number-resolved master equation. It is demonstrated that the high-order cumulants of…

介观与纳米尺度物理 · 物理学 2013-10-02 Hai-Bin Xue

We study fluctuations of electric current in a quantum resistor and derive a general quantum-mechanical formula for the distribution of transmitted charge. For that we introduce a scheme of current measurement that involves a spin $1/2$…

凝聚态物理 · 物理学 2007-05-23 L. S. Levitov , G. B. Lesovik

We show that the statistics of electron transfer in a coherent quantum point contact driven by an arbitrary time-dependent voltage is composed of elementary events of two kinds: unidirectional one-electron transfers determining the average…

介观与纳米尺度物理 · 物理学 2007-08-13 Mihajlo Vanevic , Yuli V. Nazarov , Wolfgang Belzig

We present a novel ab initio non-equilibrium approach to calculate the current across a molecular junction. The method rests on a wave function based full ab initio description of the central region of the junction combined with a tight…

材料科学 · 物理学 2007-05-23 Alexander Schnurpfeil , Bo Song , Martin Albrecht

Electron transport in a self-consistent potential along a ballistic two-terminal conductor has been investigated. We have derived general formulas which describe the nonlinear current-voltage characteristics, differential conductance, and…

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

Non-equilibrium excess noise of a short quasi one-dimensional constriction between two superconductors is considered. A general expression for the current-current correlation function valid for arbitrary temperatures and bias voltages is…

凝聚态物理 · 物理学 2009-10-28 J. P. Hessling , V. S. Shumeiko , Yu. M. Galperin , G. Wendin

We study the full probability distribution of the charge transmitted through a mesoscopic diffusive conductor during a measurement time T. We have considered a semi-classical model, with an exclusion principle in a discretized…

介观与纳米尺度物理 · 物理学 2009-11-07 P. -E. Roche , B. Doucot

Surface sensitive electric current measurements are important experimental tools poorly corroborated by theoretical models. We show that the drift-diffusion equations offer a framework for a consistent description of such experiments. The…

介观与纳米尺度物理 · 物理学 2017-06-15 Jakub Lis

We derive an effective action for contacts between superconducting terminals with arbitrary transmission distribution of conducting channels. In the case of normal-superconducting (NS) contacts we evaluate interaction correction to Andreev…

超导电性 · 物理学 2015-05-20 A. V. Galaktionov , A. D. Zaikin

The observation of very large microwave-enhanced critical currents in superconductor-normal metal-superconductor (SNS) junctions at temperatures well below the critical temperature of the electrodes has remained without a satisfactory…

超导电性 · 物理学 2010-06-18 Pauli Virtanen , Tero T. Heikkilä , F. Sebastián Bergeret , Juan Carlos Cuevas

We studied electronic relaxation in long diffusive superconductor / normal metal / superconductor (S/N/S) junctions by means of current noise and transport measurements down to very low temperature (100mK). Samples with normal metal lengths…

介观与纳米尺度物理 · 物理学 2007-05-23 C. Hoffmann , F. Lefloch , M. Sanquer

We study inelastic effects on the electronic current noise in molecular junctions, due to the coupling between transport electrons and vibrational degrees of freedom. Using a full counting statistics approach based on the generalized…

介观与纳米尺度物理 · 物理学 2010-10-27 Federica Haupt , Tomas Novotny , Wolfgang Belzig

A method to calculate the statistics of energy exchange between quantum systems is presented. The generating function of this statistics is expressed through a Keldysh path integral. The method is first applied to the problem of heat…

介观与纳米尺度物理 · 物理学 2009-11-10 M. Kindermann , S. Pilgram

We analyze charge tunneling statistics and current noise in a superconducting single-electron transistor in a regime where the Josephson-quasiparticle cycle is the dominant mechanism of transport. Due to the interplay between Coulomb…

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

I present a review of the theory and basic equations for charge transport in superconducting alloys starting from the Keldysh formulation of the quasiclassical transport equations developed by Eilenberger, Larkin and Ovchinnikov and…

超导电性 · 物理学 2022-03-30 J. A. Sauls

We study nonequilibrium noise correlations in diffusive normal-superconducting structures in the presence of a supercurrent. We present a parametrization for the quasiclassical Green's function in the first order of the counting field…

介观与纳米尺度物理 · 物理学 2009-06-17 Markku P. V. Stenberg , Pauli Virtanen , Tero T. Heikkilä

We investigate nonequilibrium noise in a diffusive Andreev interferometer, in which currents emerging from two Normal metal/Superconductor (N-S) interfaces can interfere. We observe a modulation of the shot noise when the phase difference…

介观与纳米尺度物理 · 物理学 2009-11-07 B. Reulet , A. A. Kozhevnikov , D. E. Prober , W. Belzig , Yu. V. Nazarov

We study theoretically the current-voltage characteristics, shot noise, and full counting statistics of a quantum wire double barrier structure. We model each wire segment by a spinless Luttinger liquid. Within the sequential tunneling…

介观与纳米尺度物理 · 物理学 2009-11-11 Jaeuk U. Kim , Mahn-Soo Choi , Ilya V. Krive , Jari M. Kinaret