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Direct Observation of Vortex Dynamics in Superconducting Films with Regular Arrays of Defects

Harada, K., Kamimura, O., Kasai, H., Matsuda, T., Tonomura, A., Moshchalkov, V. V.·1996·Science

Abstract

The microscopic mechanism of the matching effect in a superconductor, which manifested itself as the production of peaks or cusps in the critical current at specific values of the applied magnetic field, was investigated with Lorentz microscopy to allow direct observation of the behavior of vortices in a niobium thin film having a regular array of artificial defects. Vortices were observed to form regular and consequently rigid lattices at the matching magnetic field, at its multiples, and at its fractions. The dynamic observation furthermore revealed that vortices were most difficult to move at the matching field, whereas excess vortices moved easily.

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Metadata

Authors
Harada, K., Kamimura, O., Kasai, H., Matsuda, T., Tonomura, A., & Moshchalkov, V. V.
Venue
Science
Published
1996-11-15
Volume
274
Issue
5290
Pages
1167-1170
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2064502505
Cited by
778
References
0
FWCI
29.12
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Direct Observation of Vortex Dynamics in Superconducting Films with Regular Arrays of Defects. https://app.cochat.ai/papers/10.1126/science.274.5290.1167
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Harada, K., Kamimura, O., Kasai, H., Matsuda, T., Tonomura, A., & Moshchalkov, V. V. (1996). Direct Observation of Vortex Dynamics in Superconducting Films with Regular Arrays of Defects. Science. https://doi.org/10.1126/science.274.5290.1167

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.