Formation of vortex clusters and giant vortices in mesoscopic superconducting disks with strong disorder

W. Escoffier; I. V. Grigorieva; V. R. Misko; B. J. Baelus; F. M. Peeters; L. Y. Vinnikov; S. Dubonos

doi:10.1088/1742-6596/97/1/012172

Formation of vortex clusters and giant vortices in mesoscopic superconducting disks with strong disorder

W. Escoffier, I. V. Grigorieva, V. R. Misko, B. J. Baelus, F. M. Peeters, L. Y. Vinnikov, S. Dubonos

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

Abstract

Merged, or giant, multi-quanta vortices (GVs) appear in very small superconductors near the superconducting transition due to strong confinement of magnetic flux. Here we present evidence for a new, pinning-related, mechanism for vortex merger. Using Bitter decoration to visualise vortices in small Nb disks, we show that confinement in combination with strong disorder causes individual vortices to merge into clusters/GVs well below Tc and Hc2, in contrast to well-defined shells of individual vortices found in the absence of pinning. © 2008 IOP Publishing Ltd.

Original language	English
Article number	012172
Journal	Journal of Physics: Conference Series
Volume	97
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/97/1/012172
Publication status	Published - 1 Feb 2008

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title = "Formation of vortex clusters and giant vortices in mesoscopic superconducting disks with strong disorder",

abstract = "Merged, or giant, multi-quanta vortices (GVs) appear in very small superconductors near the superconducting transition due to strong confinement of magnetic flux. Here we present evidence for a new, pinning-related, mechanism for vortex merger. Using Bitter decoration to visualise vortices in small Nb disks, we show that confinement in combination with strong disorder causes individual vortices to merge into clusters/GVs well below Tc and Hc2, in contrast to well-defined shells of individual vortices found in the absence of pinning. {\textcopyright} 2008 IOP Publishing Ltd.",

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AU - Escoffier, W.

AU - Grigorieva, I. V.

AU - Misko, V. R.

AU - Baelus, B. J.

AU - Peeters, F. M.

AU - Vinnikov, L. Y.

AU - Dubonos, S.

N1 - Times Cited: 0 Hoste, S Ausloos, M 8th European Conference on Applied Superconductivity SEP 16-20, 2007 Brussels, BELGIUM

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Y1 - 2008/2/1

N2 - Merged, or giant, multi-quanta vortices (GVs) appear in very small superconductors near the superconducting transition due to strong confinement of magnetic flux. Here we present evidence for a new, pinning-related, mechanism for vortex merger. Using Bitter decoration to visualise vortices in small Nb disks, we show that confinement in combination with strong disorder causes individual vortices to merge into clusters/GVs well below Tc and Hc2, in contrast to well-defined shells of individual vortices found in the absence of pinning. © 2008 IOP Publishing Ltd.

AB - Merged, or giant, multi-quanta vortices (GVs) appear in very small superconductors near the superconducting transition due to strong confinement of magnetic flux. Here we present evidence for a new, pinning-related, mechanism for vortex merger. Using Bitter decoration to visualise vortices in small Nb disks, we show that confinement in combination with strong disorder causes individual vortices to merge into clusters/GVs well below Tc and Hc2, in contrast to well-defined shells of individual vortices found in the absence of pinning. © 2008 IOP Publishing Ltd.

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DO - 10.1088/1742-6596/97/1/012172

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JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

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ER -

Formation of vortex clusters and giant vortices in mesoscopic superconducting disks with strong disorder

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