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We investigate dynamic transitions and stochastic resonance phenomena in two-dimensional fully frustrated Josephson-junction arrays driven by staggered oscillating magnetic fields. As the temperature is lowered, the dynamic order parameter,…

凝聚态物理 · 物理学 2009-11-07 Gun Sang Jeon , Hyun Jin Kim , M. Y. Choi , Beom Jun Kim , Petter Minnhagen

We consider arrays of Josephson junctions as well as single junctions in both the classical and quantum-mechanical regimes, and examine the generalized (frequency-dependent) resistance, which describes the dynamic responses of such…

凝聚态物理 · 物理学 2009-10-31 Mahn-Soo Choi , M. Y. Choi , Sung-Ik Lee

We study numerically and analytically the shape of a single fluxon moving in a double stacked Josephson junctions (SJJ's) for various junction parameters. We show that the fluxon in a double SJJ's consists of two components, which are…

超导电性 · 物理学 2009-10-31 V. M. Krasnov , D. Winkler

Mesoscopic superconducting-normal-metal-superconducting (S-N-S) junctions with a large separation between the superconducting electrodes (i.e. wide junctions) exhibit nonequilibrium supercurrents, even at temperatures for which the…

超导电性 · 物理学 2009-10-31 Nathan Argaman

The dynamical properties of multi-terminal Josephson junctions have recently attracted interest, driven by the promise of new insights into synthetic topological phases of matter and Floquet states. This effort has culminated in the…

In this study, we explore the Josephson current-phase relation within a planar diffuse tunneling superconducting multilayer junction subjected to a parallel magnetic field. Our investigation involves computing the supercurrent associated…

超导电性 · 物理学 2024-06-19 A. S. Osin , Alex Levchenko , Maxim Khodas

The $J(\phi)$ relation in SFIFS, SNINS and SIS tunnel junctions is studied. The method for analytical solution of linearized Usadel equations has been developed and applied to these structures. It is shown that the Josephson current across…

超导电性 · 物理学 2009-11-11 A. A. Golubov , M. Yu. Kupriyanov

We theoretically consider a Josephson junction formed by a ferromagnetic spacer with a strong spin-orbit interaction or a magnetic spin valve, i.e., a bilayer with one static and one free layer. Electron spin transport facilitates a…

介观与纳米尺度物理 · 物理学 2015-05-30 Silas Hoffman , Ya. M. Blanter , Yaroslav Tserkovnyak

The magnetic field dependent critical current $I_{\text{c}}(B)$ of a Josephson junction is determined by the screening currents in its electrodes. In macroscopic junctions, a local vector potential drives the currents, however, in thin film…

超导电性 · 物理学 2023-02-13 Remko Fermin , Bob de Wit and , Jan Aarts

We study the classical dynamics of an axion field (the signal) that is coupling into a Josephson junction (the detector) by means of a capacitive coupling of arbitrary size. Depending on the size of the coupling constant and the initial…

混沌动力学 · 物理学 2018-08-30 Jin Yan , Christian Beck

We study a Josephson junction ladder in a magnetic field in the absence of charging effects via a transfer matrix formalism. The eigenvalues of the transfer matrix are found numerically, giving a determination of the different phases of the…

凝聚态物理 · 物理学 2009-10-28 Colin Denniston , Chao Tang

We examine a stochastic Landau-Lifshitz-Gilbert equation for a frustrated ferromagnet with competing first and second order exchange interactions exposed to deterministic and random spin transfer torques in form of transport noise. We prove…

概率论 · 数学 2023-06-29 Beniamin Goldys , Chunxi Jiao , Christof Melcher

Linear stability of inviscid, parallel, and stably stratified shear flow is studied under the assumption of smooth strictly monotonic profiles of shear flow and density, so that the local Richardson number is positive everywhere. The…

流体动力学 · 物理学 2016-05-04 Makoto Hirota , Philip J. Morrison

We investigate the collective phase dynamics in conventional long Josephson junction (LJJ) stacks and in layered superconductors, exhibiting intrinsic LJJ behaviors. Using a theoretical model which accounts for both the magnetic induction…

超导电性 · 物理学 2009-11-07 Ju H. Kim , J. Pokharel

The dynamical vortex response of a two-dimensional array of the resistively shunted Josephson junctions in a perpendicular magnetic field is inferred from simulations. It is found that, as the magnetic field is increased at a fixed…

超导电性 · 物理学 2007-05-23 Beom Jun Kim , Petter Minnhagen

We propose a threshold detector for L\'evy distributed fluctuations based on a Josephson junction. The L\'evy noise current added to a linearly ramped bias current results in clear changes in the distribution of switching currents out of…

介观与纳米尺度物理 · 物理学 2019-04-25 Claudio Guarcello , Davide Valenti , Bernardo Spagnolo , Vincenzo Pierro , Giovanni Filatrella

A superconducting magnetometers based on the magnetic field dependence of the Eck step voltage in long Josephson tunnel junctions (LJTJs) is demonstrated. The field to be measured is applied perpendicular to a continuous superconducting…

介观与纳米尺度物理 · 物理学 2013-06-18 Roberto Monaco , Carmine Granata , Roberto Russo , antonio Vettoliere

The dc current-voltage characteristics of small Josephson junctions reveal features that are not observed in larger junctions, in particular, a switch to the finite voltage state at current values much less than the expected critical…

超导电性 · 物理学 2024-04-11 Venkat Chandrasekhar

The Hamiltonian J of the Josephson junction is introduced as a self-adjoint operator on l2 tensor l2. It is shown that J can also be realized as a self-adjoint operator HS1 on L2(S1) tensor L2(S1), from which a Mathieu operator given by…

数学物理 · 物理学 2025-12-29 Toshiyuki Fujii , Fumio Hiroshima , Satoshi Tanda

The MHD flow driven by a travelling magnetic field (TMF) in an annular channel is investigated numerically. For sufficiently large magnetic Reynolds number Rm, or if a large enough pressure gradient is externally applied, the system…

流体动力学 · 物理学 2016-03-23 Christophe Gissinger , Paola Rodriguez-Imazio , Stephan Fauve