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相关论文: Non-local Andreev reflection in superconducting qu…

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We argue that Coulomb interaction can strongly influence non-local electron transport in normal-superconducting-normal structures and emphasize direct relation between Coulomb effects and non-local shot noise. In the tunneling limit…

超导电性 · 物理学 2010-12-06 Dmitri S. Golubev , Andrei D. Zaikin

We study the transport properties of a quantum dot contacted to two superconducting reservoirs by means of the Keldysh field theory approach, showing how this technique allows us to straightforwardly recover previous results, resulting…

介观与纳米尺度物理 · 物理学 2025-09-05 Marco Uguccioni , Luca Dell'Anna

The comment (arXiv:2505.23490) fails to identify any scientific errors and its central arguments actually support the main conclusions of our publication [Nat. Phys. 21, 708 (2025)]. Firstly, the whole argument of the comment to try to…

介观与纳米尺度物理 · 物理学 2025-09-08 Junya Feng , Henry F. Legg , Mahasweta Bagchi , Daniel Loss , Jelena Klinovaja , Yoichi Ando

We investigate theoretically the simultaneous tunneling of two electrons from a superconductor into a normal metal at low temperatures and voltages. Such an emission process is shown to be equivalent to the Andreev reflection of an incident…

介观与纳米尺度物理 · 物理学 2009-11-10 E. Prada , F. Sols

In this PhD thesis, quantum devices based on molecular-beam epitaxy grown InAs semiconductor with an in-situ grown epitaxial Al film were investigated. Novel device geometries were realized that allow for the study of bound states that…

介观与纳米尺度物理 · 物理学 2022-12-26 Andreas Pöschl

Crossed Andreev reflection (CAR) is a scattering phenomenon occurring in a superconductor (SC) connected to two metallic leads, where an incident electron on one side of the SC emerges on the opposite side as a hole. Despite its…

介观与纳米尺度物理 · 物理学 2024-06-21 Sachchidanand Das , Abhiram Soori

We study the electronic current through a quantum dot coupled to two superconducting leads which is driven by either a voltage $V$ or temperature $\Delta T$ bias. Finite biases beyond the linear response regime are considered. The local…

强关联电子 · 物理学 2014-06-12 Jan F. Rentrop , Severin G. Jakobs , Volker Meden

Crossed Andreev reflection (CAR) in metallic nanostructures, a possible basis for solid-state electron entangler devices, is usually investigated by detecting non-local voltages in multi-terminal superconductor/normal metal devices. This…

介观与纳米尺度物理 · 物理学 2010-07-19 A. Kleine , A. Baumgartner , J. Trbovic , D. S. Golubev , A. D. Zaikin , C. Schoenenberger

We consider an Anderson impurity (A) weakly connected to a superconducting electrode (S) on one side and a superconducting or a normal metal electrode (N) on the other side. A general path integral formalism is developed and the response of…

强关联电子 · 物理学 2009-10-31 Yshai Avishai , Anatoly Golub , Andrei D. Zaikin

We describe microscopic theory for the quantum transport through finite interacting systems connected to noninteracting leads. It can be applied to small systems such as quantum dots, quantum wires, atomic chain, molecule, and so forth. The…

介观与纳米尺度物理 · 物理学 2007-05-23 Akira Oguri

We measure superfluid transport of strongly interacting fermionic lithium atoms through a quantum point contact with local, spin-dependent particle loss. We observe that the characteristic non-Ohmic superfluid transport enabled by…

We theoretically study the superconducting proximity effect in silicene, which features massive Dirac fermions with a tunable mass (band gap), and compute the conductance across a normal/superconductor (N/S) silicene junction, the non-local…

介观与纳米尺度物理 · 物理学 2015-06-16 Jacob Linder , Takehito Yokoyama

We study Andreev reflection (AR) tunneling through a quantum dot (QD) connected to a ferromagnet and a superconductor, in which the intradot spin-flip interaction is included. By using the nonequibrium-Green-function method, the formula of…

介观与纳米尺度物理 · 物理学 2009-11-10 Xiufeng Cao , Yaoming Shi , Xiaolong Song , Shiping Zhou , Hao Chen

We investigate several factors controlling the physics of hybrid structures involving ferromagnetic domain walls (DWs) and superconducting (S) metals. We discuss the role of non collinear magnetizations in S/DW junctions in a spin $\otimes$…

超导电性 · 物理学 2007-05-23 R. Mélin , S. Peysson

We have measured local and non-local conductance of mesoscopic normal-metal/superconductor hybrid structures fabricated by e-beam lithography and shadow evaporation. The sample geometry consists of a superconducting aluminum bar with two…

介观与纳米尺度物理 · 物理学 2010-01-21 J. Brauer , F. Hübler , M. Smetanin , D. Beckmann , H. v. Löhneysen

We demonstrate several new electron transport phenomena mediated by Andreev bound states (ABSs) that form on three-terminal carbon nanotube (CNT) QDs, with one superconducting (S) contact in the center and two adjacent normal metal (N)…

介观与纳米尺度物理 · 物理学 2017-11-10 J. Gramich , A. Baumgartner , C. Schönenberger

We study the non-equilibrium transport properties of a one-dimensional array of dissipative quantum dots. Using the Keldysh formalism, we show that the dots' dissipative nature leads to a spatial variation of the chemical potential, which…

介观与纳米尺度物理 · 物理学 2010-06-11 Hui Dai , Dirk K. Morr

We present calculations of the temperature-dependent electrostatic and chemical potential distributions in disordered normal metal-superconductor structures. We show that they differ appreciably in the presence of a superconducting terminal…

凝聚态物理 · 物理学 2009-10-28 T. H. Stoof , Yu. V. Nazarov

We present a theory of the current-voltage characteristics in diffusive superconductor-normal-metal-superconductor junctions. By solving the time-dependent Usadel equations we are able to describe the phase-coherent transport for arbitrary…

超导电性 · 物理学 2009-11-11 J. C. Cuevas , J. Hammer , J. Kopu , J. K. Viljas , M. Eschrig

Nonequilibrium effects and their impact on a charge transport in superconducting ballistic weak links biased by an ac voltage are investigated within the framework of the Keldysh technique. We demonstrate that the microwave field destroys…

超导电性 · 物理学 2008-02-03 Uwe Gunsenheimer , A. D. Zaikin