中文
相关论文

相关论文: Dynamical regimes of vortex flow in type-II superc…

200 篇论文

We use a two-coil mutual inductance technique to investigate the non-linear response of the vortex lattice of two type-II superconducting thin films, namely a very weakly pinned amorphous Molybdenum Germanium (a-MoGe) and a…

超导电性 · 物理学 2026-05-29 Somak Basistha , Soumyajit Mandal , John Jesudasan , Vivas Bagwe , Pratap Raychaudhuri

We derive a hydrodynamic model for a liquid of arbitrarily curved flux-lines and vortex loops using the mapping of the vortex liquid onto a liquid of relativistic charged quantum bosons in 2+1 dimensions recently suggested by Tesanovic and…

超导电性 · 物理学 2007-05-23 P. Benetatos , M. C. Marchetti

Electron plasmas confined by an external magnetic field exhibit variations in a two-dimensional plane orthogonal to the confining magnetic field. A nonlinear fluid simulation code to investigate the properties of 2-D electron plasma wave…

等离子体物理 · 物理学 2009-11-13 Dastgeer Shaikh , P. K. Shukla

A simple mechanical method for the investigation of Abrikosov vortex lattice stimulated dynamics in superconductors has been used. By this method we studied the action of pulsed magnetic fields on the vortex lattice and established the…

I introduce a critical-state theory incorporating both flux cutting and flux transport to calculate the magnetic-field and current-density distributions inside a type-II superconducting cylinder at its critical current in a longitudinal…

超导电性 · 物理学 2015-05-27 John R. Clem

With increasing applied current we show that the moving vortex lattice changes its structure from a triangular one to a set of parallel vortex rows in a pinning free superconductor. This effect originates from the change of the shape of the…

超导电性 · 物理学 2009-11-13 D. Y. Vodolazov , F. M. Peeters

This paper explores experimental and numerical investigation of the spatio-temporal dynamics of a finite-length vortex column in three dimensions using Particle Image Velocimetry (PIV) and Large Eddy Simulation (LES). The research examines…

流体动力学 · 物理学 2024-11-12 Swetarka Das , Dharmendra Yadav , Abhisek Kumar Gupta , Debopam Das , Ashoke De

We study the Lagrangian dynamics of passive tracers in a simple model of a driven two-dimensional vortex resembling real-world geophysical flow patterns. Using a discrete approximation of the system's transfer operator, we construct a…

混沌动力学 · 物理学 2017-04-05 Michael Lindner , Reik V. Donner

A simulation study using the time-dependent Ginzburg-Landau theory is performed for the vortex state in two-component superconductors, such as PrOs_4_Sb_12_. We investigate the flux flow and the pinning of the vortex sheet structure. We…

超导电性 · 物理学 2007-08-01 Yasushi Matsunaga , Masanori Ichioka , Kazushige Machida

Using scanning tunneling microscopy and Ginzburg-Landau simulations we explore vortex configurations in magnetically coupled NbSe$_2$-Permalloy superconductor-ferromagnet bilayer. The Permalloy film with stripe domain structure induces…

超导电性 · 物理学 2015-05-14 G. Karapetrov , M. V. Milošević , M. Iavarone , J. Fedor , A. Belkin , V. Novosad , F. M. Peeters

We analyse numerically the linear stability of a liquid metal flow in a rectangular duct with perfectly electrically conducting walls subject to a uniform transverse magnetic field. A non-standard three dimensional vector stream…

流体动力学 · 物理学 2012-09-26 Jānis Priede , Svetlana Aleksandrova , Sergei Molokov

The two-dimensional flow of viscous incompressible fluid in the domain between two concentric circles is investigated numerically. To solve the problem, the low-order Galerkin models are used. When the inner circle rotates fast enough, two…

流体动力学 · 物理学 2009-05-13 N. V. Petrovskaya , M. Yu. Zhukov

The last decade has been marked by great interest in the dynamics of vortices moving at high ($>$10\,km/s) velocities in superconductors. However, the flux-flow instability (FFI) prevents its exploration and sets practical limits for the…

超导电性 · 物理学 2023-11-15 Oleksandr V. Dobrovolskiy

This manuscript has been accepted for publication in Physical Review Fluids, see https://journals.aps.org/prfluids/accepted/53075Se8O0b1b109b1cc0061b280aaa122f0f92dc. The stability of a pulsatile quasi-two-dimensional duct flow was…

流体动力学 · 物理学 2021-05-12 Christopher J. Camobreco , Alban Pothérat , Gregory J. Sheard

We present evidence of magnetically controlled guided vortex motion in a hybrid superconductor/ferromagnet nanosystem consisting of an Al film on top of a square array of permalloy square rings. When the rings are magnetized with an…

超导电性 · 物理学 2009-11-13 N. Verellen , A. V. Silhanek , V. Metlushko , W. Gillijns , F. Gozzini , B. Ilic , V. V. Moshchalkov

For a type-II superconductor, when the applied magnetic field is higher than the lower critical value Hc1, the magnetic flux will penetrate into the superconductor and form quantized vortices, which usually are arranged in an Abrikosov…

We show that for a thin superconducting strip placed in a transverse dc magnetic field - the typical geometry of experiments with high-Tc superconductors - the application of a weak ac magnetic field perpendicular to the dc field generates…

超导电性 · 物理学 2009-11-07 Ernst Helmut Brandt , Grigorii P. Mikitik

We study effects of pinning on the dynamics of a vortex lattice in a type II superconductor in the strong-pinning situation and determine the force--velocity (or current--voltage) characteristic combining analytical and numerical methods.…

超导电性 · 物理学 2017-11-08 A. U. Thomann , V. B. Geshkenbein , G. Blatter

Low-temperature dissipation due to vortex motion in strongly anisotropic type-II superconductors with a moderate disorder ($\Delta^2/E_F \ll \hbar/\tau \ll \Delta$) is shown to be determined by the Zener-type transitions between the…

凝聚态物理 · 物理学 2009-10-28 M. V. Feigel'man , M. A. Skvortsov

Magnetic flux can penetrate a type-II superconductor in form of Abrikosov vortices. These tend to arrange in a triangular flux-line lattice (FLL) which is more or less perturbed by material inhomogeneities that pin the flux lines, and in…

supr-con · 物理学 2009-10-28 Ernst Helmut Brandt