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Dynamics of stripe patterns in type-I superconductors subject to a rotating field

M. Menghini·R. J. Wijngaarden
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Abstract

The evolution of stripe patterns in type-I superconductors subject to a rotating in-plane magnetic field is investigated magneto-optically. The experimental results reveal a very rich and interesting behavior of the patterns. For small rotation angles, a small parallel displacement of the main part of the stripes and a co-rotation of their very ends is observed. For larger angles, small sideward protrusions develop, which then generate a zigzag instability, ultimately leading to a breaking of stripes into smaller segments. The short segments then start to co-rotate with the applied field although they lag behind by approximately $10^\circ$. Very interestingly, if the rotation is continued, also reconnection of segments into longer stripes takes place. These observations demonstrate the importance of pinning in type-I superconductors.

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M. Menghini, R. J. Wijngaarden. 2005-09-30. Dynamics of stripe patterns in type-I superconductors subject to a rotating field. https://doi.org/10.1103/physrevb.72.172503

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