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相关论文: Resonance in the nonadiabatic quantum pumping of t…

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An all-superconducting bijunction consists of a central superconductor contacted to two lateral superconductors, such that non-local crossed Andreev reflection is operating. Then new correlated transport channels for the Cooper pairs appear…

介观与纳米尺度物理 · 物理学 2013-06-05 T. Jonckheere , J. Rech , T. Martin , B. Douçot , D. Feinberg , R. Mélin

We report on the fabrication and measurements of planar mesoscopic Josephson junctions formed by InAs nanowires coupled to superconducting Nb terminals. The use of Si-doped InAs-nanowires with different bulk carrier concentrations allowed…

介观与纳米尺度物理 · 物理学 2012-05-11 H. Y. Gunel , I. E. Batov , H. Hardtdegen , K. Sladek , A. Winden , K. Weis , G. Panaitov , D. Gruetzmacher , Th. Schaepers

Conventional models of Josephson junction dynamics rely on the absence of low energy quasiparticle states due to a large superconducting gap. With this assumption the quasiparticle degrees of freedom become "frozen out" and the phase…

超导电性 · 物理学 2011-10-25 Jens Michelsen , Vitaly S. Shumeiko

We calculate the Josephson current density j(phi) for a Weyl superconductor--normal-metal--superconductor junction for which the outer terminals are superconducting Weyl metals and the normal layer is a Weyl (semi)metal. We describe the…

介观与纳米尺度物理 · 物理学 2017-02-24 Kevin A. Madsen , Emil J. Bergholtz , Piet W. Brouwer

For Josephson junctions based on s-wave superconductors, time-reversal symmetry is known to allow for powerful relations between the normal-state junction properties, the excitation spectrum, and the Josephson current. Here we provide…

介观与纳米尺度物理 · 物理学 2018-08-10 E. A. Mellars , B. Béri

The Josephson vortex formed in a superconductor-insulator-superconductor (SIS) junction can affect the quantum mechanics of quasiparticles by creating an effective adiabatic potential determined by the inhomogeneous distribution of the…

超导电性 · 物理学 2023-01-31 Vadim Plastovets , A. S. Mel'nikov

In superconductor-normal-superconductor (SNS) junctions, dissipationless supercurrent is mediated via Andreev bound states (ABSs) controlled by the phase difference between the two superconductors. Theory has long predicted significant…

We investigate a network of coupled superconducting transmission line resonators, each of them made nonlinear with a capacitively shunted Josephson junction coupling to the odd flux modes of the resonator. The resulting eigenmode spectrum…

超导电性 · 物理学 2012-07-31 Martin Leib , Frank Deppe , Achim Marx , Rudolf Gross , Michael Hartmann

We explore the behavior of the ac admittance of superconductor-normal metal-superconductor (SNS) junctions as the phase difference of the order parameters between the superconductors is varied. We find three characteristic regimes, defined…

超导电性 · 物理学 2011-04-21 Pauli Virtanen , F. Sebastián Bergeret , Juan Carlos Cuevas , Tero T. Heikkilä

We present a unified description of a junction between $s$-wave (BCS) superconductors and a junction between $p$-wave superconductors in a topologically nontrivial phase, which relies on a scattering state expansion. We compute Josephson…

超导电性 · 物理学 2019-03-26 R. Jacquet , J. Rech , T. Jonckheere , A. Zazunov , T. Martin

We study a diffusive superconductor--ferromagnet--superconductor (SFS) junction with in-plane ferromagnetic domains. Close to the superconducting transition temperature, we describe the proximity effect in the junction with the linearized…

介观与纳米尺度物理 · 物理学 2007-10-02 B. Crouzy , S. Tollis , D. A. Ivanov

We solve the Dirac-Bogoliubov-De-Gennes equation in an impurity-free superconductor-normal-superconductor (SNS) junction, to determine the maximal supercurrent that can flow through an undoped strip of graphene with heavily doped…

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

Short ballistic graphene Josephson junctions sustain superconducting current with a non-sinusoidal current-phase relation up to a critical current threshold. The current-phase relation, arising from proximitized superconductivity, is…

介观与纳米尺度物理 · 物理学 2020-01-09 Francesco M. D. Pellegrino , Giuseppe Falci , Elisabetta Paladino

We have investigated charge transport in ultrasmall superconducting single and double Josephson junctions coupled to resonant modes of the electromagnetic environment. We observe pronounced current peaks in the transport characteristics of…

A singularity at the Josephson frequency in the noise spectral density of a disordered normal metal -- superconductor junction is predicted for bias voltages below the superconducting gap. The non-stationary Aharonov-Bohm effect, recently…

介观与纳米尺度物理 · 物理学 2009-10-31 Gordey B. Lesovik , Thierry Martin , Julien Torres

We study the nonequilibrium dynamics of multiband BCS superconductors subjected to ultrashort pump pulses. Using density-matrix theory, the time evolution of the Bogoliubov quasiparticle densities and the superconducting order parameters…

超导电性 · 物理学 2013-01-10 Alireza Akbari , Andreas P. Schnyder , Dirk Manske , Ilya Eremin

We developed a weak-linked Josephson junction time-domain simulation tool based on the Bardeen-Cooper-Schrieffer (BCS) theory to account for the electrodynamics of Cooper pairs and quasiparticles in the presence of thermal noise. The model,…

超导电性 · 物理学 2023-11-16 Lucas Iwanikow , Pascal Febvre

We theoretically study the pump-probe response of nonequilibrium BCS superconductors coupled to optical phonons. For ultrashort pump pulses a nonadiabatic regime emerges, which is characterized by oscillations of the superconducting order…

超导电性 · 物理学 2014-07-29 H. Krull , D. Manske , G. S. Uhrig , A. P. Schnyder

The theory of time-dependent quantum transport addresses the question: How do electrons flow through a junction under the influence of an external perturbation as time goes by? In this paper, we invert this question and search for a…

介观与纳米尺度物理 · 物理学 2014-07-10 K. J. Pototzky , E. K. U. Gross

Recent progress in the study of dynamical phase transitions has been made with a large-deviation approach to study trajectories of stochastic jumps using a thermodynamic formalism. We study this method applied to an open quantum system…

量子物理 · 物理学 2012-05-31 Sam Genway , Juan P. Garrahan , Igor Lesanovsky , Andrew D. Armour