Numerical simulation of vortex dynamics in type-II superconductors in oscillating magnetic field using time-dependent Ginzburg-Landau equations

Hasnain Mehdi Jafri, Xingqiao Ma, Congpeng Zhao, Deshan Liang, Houbing Huang, Zhuhong Liu, Long-qing Chen

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Time-dependent Ginzburg-Landau equations were solved by the finite difference scheme for a superconducting sample in steady and oscillating magnetic fields for 3D geometry. The dynamic behaviour of penetrating and leaving magnetic vortices in superconductor with the oscillating magnetic field was simulated. Carrier concentration density and the average magnetization of the sample were studied as a function of the external oscillating magnetic field. Anomalies in carrier concentrations at certain magnetic field values were observed and discussed. It was also observed that the area swept by magnetization versus external magnetic field is magnetic oscillation frequency dependent, which increases with increasing frequencies. It was suggested that this effect may cause instability in the superconducting characteristics of the sample over a number of cycles. Calculated energy patterns showed consistency with vortex patterns in the steady magnetic field. Magnetic oscillations initiated oscillations in energy components, ripples in superconducting energy are subjected to the entrance and leaving of vortices, while instability observed in interaction energy is referred to vortex relaxation time.

Original languageEnglish (US)
Article number505701
JournalJournal of Physics Condensed Matter
Volume29
Issue number50
DOIs
StatePublished - Nov 22 2017

Fingerprint

Landau-Ginzburg equations
Superconducting materials
Vortex flow
vortices
Magnetic fields
Computer simulation
magnetic fields
simulation
oscillations
Carrier concentration
Magnetization
magnetization
energy
ripples
entrances
Relaxation time
relaxation time
anomalies
cycles
Geometry

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Jafri, Hasnain Mehdi ; Ma, Xingqiao ; Zhao, Congpeng ; Liang, Deshan ; Huang, Houbing ; Liu, Zhuhong ; Chen, Long-qing. / Numerical simulation of vortex dynamics in type-II superconductors in oscillating magnetic field using time-dependent Ginzburg-Landau equations. In: Journal of Physics Condensed Matter. 2017 ; Vol. 29, No. 50.
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Numerical simulation of vortex dynamics in type-II superconductors in oscillating magnetic field using time-dependent Ginzburg-Landau equations. / Jafri, Hasnain Mehdi; Ma, Xingqiao; Zhao, Congpeng; Liang, Deshan; Huang, Houbing; Liu, Zhuhong; Chen, Long-qing.

In: Journal of Physics Condensed Matter, Vol. 29, No. 50, 505701, 22.11.2017.

Research output: Contribution to journalArticle

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AU - Jafri, Hasnain Mehdi

AU - Ma, Xingqiao

AU - Zhao, Congpeng

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AU - Huang, Houbing

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AU - Chen, Long-qing

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