Surface barrier for flux entry and exit in mesoscopic superconducting systems

G. R. Berdiyorov; L. R.E. Cabral; F. M. Peeters

doi:10.1063/1.2010351

Surface barrier for flux entry and exit in mesoscopic superconducting systems

G. R. Berdiyorov^*, L. R.E. Cabral, F. M. Peeters

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

The energy barrier which has to be overcome for a single vortex to enter or exit the sample is studied for thin superconducting disks, rings, and squares using the nonlinear Ginzburg-Landau theory. The shape and the height of the nucleation barrier is investigated for different sample radii and thicknesses and for different values of the Ginzburg-Landau parameter κ. It is shown that the London theory considerably overestimates (underestimates) the energy barrier for vortex expulsion (penetration).

Original language	English
Article number	095105
Journal	Journal of Mathematical Physics
Volume	46
Issue number	9
DOIs	https://doi.org/10.1063/1.2010351
Publication status	Published - Sept 2005
Externally published	Yes

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title = "Surface barrier for flux entry and exit in mesoscopic superconducting systems",

abstract = "The energy barrier which has to be overcome for a single vortex to enter or exit the sample is studied for thin superconducting disks, rings, and squares using the nonlinear Ginzburg-Landau theory. The shape and the height of the nucleation barrier is investigated for different sample radii and thicknesses and for different values of the Ginzburg-Landau parameter κ. It is shown that the London theory considerably overestimates (underestimates) the energy barrier for vortex expulsion (penetration).",

author = "Berdiyorov, {G. R.} and Cabral, {L. R.E.} and Peeters, {F. M.}",

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AU - Cabral, L. R.E.

AU - Peeters, F. M.

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N2 - The energy barrier which has to be overcome for a single vortex to enter or exit the sample is studied for thin superconducting disks, rings, and squares using the nonlinear Ginzburg-Landau theory. The shape and the height of the nucleation barrier is investigated for different sample radii and thicknesses and for different values of the Ginzburg-Landau parameter κ. It is shown that the London theory considerably overestimates (underestimates) the energy barrier for vortex expulsion (penetration).

AB - The energy barrier which has to be overcome for a single vortex to enter or exit the sample is studied for thin superconducting disks, rings, and squares using the nonlinear Ginzburg-Landau theory. The shape and the height of the nucleation barrier is investigated for different sample radii and thicknesses and for different values of the Ginzburg-Landau parameter κ. It is shown that the London theory considerably overestimates (underestimates) the energy barrier for vortex expulsion (penetration).

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Surface barrier for flux entry and exit in mesoscopic superconducting systems

Abstract

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