Geometry-guided flux behaviour in superconducting Pb microcrystals


Engbarth, M., Miloevic, M. V., Bending, S. J. and Nasirpouri, F., 2009. Geometry-guided flux behaviour in superconducting Pb microcrystals. Journal of Physics: Conference Series, 150 (5), 052048.

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Electrochemistry offers highly flexible routes to fabrication of a wide variety of mesostructures, including three-dimensional (3D) crystallites, thin films and nanowires. Using this method we have grown various 3D superconducting Pb mesostructures with vastly different morphologies. We present here results on a truncated(half)-icosahedron with a hexagonal base and a tripod structure with a triangular base. Using Hall probe magnetometry we have obtained magnetisation curves for these structures at several temperatures and see evidence of geometry-driven flux entry and exit as well as flux trapping caused by specific sample geometries. We also observe behaviour that we interpret in terms of the formation of giant vortices, bearing in mind that bulk Pb is a type-I superconducting material.


Item Type Articles
CreatorsEngbarth, M., Miloevic, M. V., Bending, S. J. and Nasirpouri, F.
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DepartmentsFaculty of Science > Physics
ID Code19111


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