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相关论文: Full counting statistics of multiple Andreev refle…

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Exchange fluctuation theorems (XFTs) describe a fundamental symmetry relation for particle and energy exchange between several systems. Here we study the XFTs of a Kitaev chain connected to two reservoirs in the same temperature but…

量子物理 · 物理学 2021-03-31 Fan Zhang , H. T. Quan

We present an investigation of the energy dependence of the full charge counting statistics in diffusive normal-insulating-normal-insulating-superconducting junctions. It is found that the current in general is transported via a correlated…

介观与纳米尺度物理 · 物理学 2009-11-07 P. Samuelsson

Single atom junctions between superconducting niobium leads are produced using the Mechanically Controllable Break Junction technique. The current-voltage characteristics of these junctions are analysed using an exact formulation for a…

介观与纳米尺度物理 · 物理学 2009-10-31 B. Ludoph , N. van der Post , E. N. Bratus' , E. V. Bezuglyi , V. S. Shumeiko , G. Wendin , J. M. van Ruitenbeek

We calculate the probability distribution of the Andreev reflection eigenvalues R_n at the Fermi level in the circular ensemble of random-matrix theory. Without spin-rotation symmetry, the statistics of the electrical conductance G depends…

介观与纳米尺度物理 · 物理学 2015-03-17 C. W. J. Beenakker , J. P. Dahlhaus , M. Wimmer , A. R. Akhmerov

Atomic quantum point contacts accommodate a small number of conduction channels. Their number N and transmission coefficients {T_n} can be determined by analyzing the subgap structure due to multiple Andreev reflections in the…

超导电性 · 物理学 2009-10-31 E. Scheer , J. C. Cuevas , A. Levy Yeyati , A. Martin-Rodero , P. Joyez , M. H. Devoret , D. Esteve , C. Urbina

We present a general technique to obtain the zero temperature full counting statistics of charge transfer in interacting impurity models out of equilibrium from time-dependent simulations on a lattice. We demonstrate the technique with…

强关联电子 · 物理学 2012-05-23 Sam T. Carr , Dmitry A. Bagrets , Peter Schmitteckert

We investigate conductances and current correlations in a system consisting of a normal multichannel conductor connected to one superconducting and two ferromagnetic electrodes. For antiparallel orientation of the ferromagnet polarizations,…

介观与纳米尺度物理 · 物理学 2009-11-10 David Sanchez , Rosa Lopez , Peter Samuelsson , Markus Buttiker

We provide a direct proof of two-electron Andreev transitions in a superconductor - normal metal tunnel junction by detecting them in a real-time electron counting experiment. Our results are consistent with ballistic Andreev transport with…

介观与纳米尺度物理 · 物理学 2012-12-13 V. F. Maisi , O. -P. Saira , Yu. A. Pashkin , J. S. Tsai , D. V. Averin , J. P. Pekola

We study the statistics of charge transport in a mesoscopic three-terminal device with one superconducting terminal and two normal-metal terminals. We calculate the full distribution of transmitted charges into the two symmetrically biased…

超导电性 · 物理学 2009-11-07 J. Boerlin , W. Belzig , C. Bruder

We use the Landauer-B\"uttiker scattering theory for electronic transport to calculate the current cross-correlations in a voltage-biased three-terminal junction with all superconducting leads. At low bias voltage, when charge transport is…

介观与纳米尺度物理 · 物理学 2016-04-27 Roman-Pascal Riwar , Driss M. Badiane , Manuel Houzet , Julia S. Meyer , Yuli V. Nazarov

The statistics of charge transport across a tunnel junction with energy-dependent scattering is investigated. A model with quadratic dispersion relation is discussed in general and, independently, in the two limiting cases of a large…

介观与纳米尺度物理 · 物理学 2015-06-15 Vincent Beaud , Gian Michele Graf , Andrei V. Lebedev , Gordey B. Lesovik

We use a semiclassical approach for analysing the tunneling transport through a normal conductor in contact with superconducting mirrors. Our analysis of the electron-hole propagation along semiclassical trajectories shows that resonant…

超导电性 · 物理学 2009-10-31 A. Kadigrobov , L. Y. Gorelik , R. I. Shekhter , M. Jonson

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

Giant oscillations of the conductance of a superconductor - ferromagnet - superconductor Andreev interferometer are predicted. The effect is due to the resonant transmission of normal electrons through Andreev levels when the voltage $V$…

介观与纳米尺度物理 · 物理学 2009-10-31 A. Kadigrobov , R. I. Shekhter , M. Jonson , Z. Ivanov , T. Claeson

We study the full counting statistics for the transmission of two identical particles with positive or negative symmetry under exchange for the situation where the scattering depends on energy. We find that, besides the expected sensitivity…

介观与纳米尺度物理 · 物理学 2008-03-07 F. Hassler , G. B. Lesovik , G. Blatter

We study the full-counting statistics of charges transmitted through a single-level quantum dot weakly coupled to a local Einstein phonon which causes fluctuations in the dot energy. An analytic expression for the cumulant generating…

介观与纳米尺度物理 · 物理学 2013-03-12 Y. Utsumi , O. Entin-Wohlman , A. Ueda , A. Aharony

We study coherent multiple Andreev reflections in quantum SNS junctions of finite length and arbitrary transparency. The presence of superconducting bound states in these junctions gives rise to great enhancement of the subgap current. The…

超导电性 · 物理学 2007-05-23 Å. Ingerman , G. Johansson , V. S. Shumeiko , G. Wendin

We study the current statistics in normal diffusive conductors in contact with a superconductor. Using an extension of the Keldysh Green's function method we are able to find the full distribution of charge transfers for all temperatures…

超导电性 · 物理学 2009-11-07 W. Belzig , Yu. V. Nazarov

Andreev reflection is a smart tool to investigate the spin polarisation P of the current through point contacts between a superconductor and a ferromagnet. We compare different models to extract P from experimental data and investigate the…

介观与纳米尺度物理 · 物理学 2015-06-12 S. Bouvron , M. Stokmaier , M. Marz , G. Goll

A theory is presented for the photodetection statistics of radiation produced by current fluctuations in a phase-coherent conductor. Deviations are found from the Poisson statistics that would result from a classical current. For detection…

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