Vortex dynamics controlled by pinning centers on Nb superconductor open microtubes

Abstract

Vortex dynamics on a Nb superconductor open microtube are studied theoretically taking into account the impact of single and multiple pinning centers. These dynamics are described by two characteristic times: the period of nucleation of vortices at one edge of the tube and the duration of motion of a vortex along the tube. Simulation reveals that the both characteristic times change by a factor of up to two due to the presence of pinning centers. Different regimes of vortex dynamics are effectively controlled by varying positions of pinning centers at given values of the applied magnetic field, the tube radius and the transport current orthogonal to the tube axis. An experimental detection of the tube curvature effects on vortex dynamics stays feasible in the presence of pinning centers.

Original language	English
Pages (from-to)	1-5
Number of pages	5
Journal	Physica C: Superconductivity and its Applications
Volume	497
DOIs	https://doi.org/10.1016/j.physc.2013.10.006
Publication status	Published - 1 Jan 2014

Keywords

Flux pinning
Nanostructured materials
Niobium
Type II superconductors

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/j.physc.2013.10.006

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title = "Vortex dynamics controlled by pinning centers on Nb superconductor open microtubes",

abstract = "Vortex dynamics on a Nb superconductor open microtube are studied theoretically taking into account the impact of single and multiple pinning centers. These dynamics are described by two characteristic times: the period of nucleation of vortices at one edge of the tube and the duration of motion of a vortex along the tube. Simulation reveals that the both characteristic times change by a factor of up to two due to the presence of pinning centers. Different regimes of vortex dynamics are effectively controlled by varying positions of pinning centers at given values of the applied magnetic field, the tube radius and the transport current orthogonal to the tube axis. An experimental detection of the tube curvature effects on vortex dynamics stays feasible in the presence of pinning centers.",

keywords = "Flux pinning, Nanostructured materials, Niobium, Type II superconductors",

author = "Rezaev, {R. O.} and Fomin, {V. M.} and Schmidt, {O. G.}",

year = "2014",

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language = "English",

volume = "497",

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journal = "Physica C: Superconductivity and its Applications",

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AU - Rezaev, R. O.

AU - Fomin, V. M.

AU - Schmidt, O. G.

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Vortex dynamics on a Nb superconductor open microtube are studied theoretically taking into account the impact of single and multiple pinning centers. These dynamics are described by two characteristic times: the period of nucleation of vortices at one edge of the tube and the duration of motion of a vortex along the tube. Simulation reveals that the both characteristic times change by a factor of up to two due to the presence of pinning centers. Different regimes of vortex dynamics are effectively controlled by varying positions of pinning centers at given values of the applied magnetic field, the tube radius and the transport current orthogonal to the tube axis. An experimental detection of the tube curvature effects on vortex dynamics stays feasible in the presence of pinning centers.

AB - Vortex dynamics on a Nb superconductor open microtube are studied theoretically taking into account the impact of single and multiple pinning centers. These dynamics are described by two characteristic times: the period of nucleation of vortices at one edge of the tube and the duration of motion of a vortex along the tube. Simulation reveals that the both characteristic times change by a factor of up to two due to the presence of pinning centers. Different regimes of vortex dynamics are effectively controlled by varying positions of pinning centers at given values of the applied magnetic field, the tube radius and the transport current orthogonal to the tube axis. An experimental detection of the tube curvature effects on vortex dynamics stays feasible in the presence of pinning centers.

KW - Flux pinning

KW - Nanostructured materials

KW - Niobium

KW - Type II superconductors

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