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SM ISO690:2012 REZAEV, R., LEVCHENKO, E., FOMIN, Vladimir. Simulation of rolled-up superconductor micro- and nanotubes. In: Materials Science and Condensed Matter Physics, Ed. 8-th Edition, 12-16 septembrie 2016, Chişinău. Chişinău: Institutul de Fizică Aplicată, 2016, Editia 8, p. 49. ISBN 978-9975-9787-1-2. |
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Materials Science and Condensed Matter Physics Editia 8, 2016 |
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Conferința "International Conference on Materials Science and Condensed Matter Physics" 8-th Edition, Chişinău, Moldova, 12-16 septembrie 2016 | ||||||
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Pag. 49-49 | ||||||
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Control over vortex dynamics in superconductor structures is realized by the guidance of vortices through predefined trajectories, for example, by the rectification of the average vortex movement [1]. The guidance can be implemented through an array of artificial pinning sites, which lead to a redistribution of the local current density [2]. Alternatively, technological advances in fabrication of rolled-up structures [3] provide an efficient tool to tailor superconducting properties of materials [4]. In such rolled-up tubes made from Nb, the vortex nucleation period is shown to be branched due to the combined influence of pinning centers [5] and the curvature. We suggest to manipulate the branching in such a superconductor structure, where the current density distribution can be controlled locally near the positions of vortex nucleation. A possible implementation of this idea is to fabricate multiple mutually isolated electrodes, through which the transport current is introduced into the rolled-up structure (see Fig. 1). |
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