Surface barrier of holes drilled in a type-II superconductor

Denis Gokhfeld

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arXiv · 2303.12315

Surface barrier of holes drilled in a type-II superconductor

Denis Gokhfeld

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Abstract

Holes drilled in a type-II superconductor trap the magnetic flux. Following Clem's flux pinning model, we consider surface pinning as a mechanism for compressing the magnetic flux in the holes. Estimations of the trapped magnetic flux demonstrate that the holes with the diameter up to 2 mm are advantageous for bulk single-crystal REBCO samples. The REBCO films and tapes can be improved by the holes with diameter smaller than 10 $\mu$m.

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Denis Gokhfeld. 2023-03-22. Surface barrier of holes drilled in a type-II superconductor. https://arxiv.org/abs/2303.12315

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