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Growth of a vortex polycrystal in type II superconductors
Moretti, Paolo; Miguel López, María del Carmen; Zaiser, Michael; Zapperi, Stefano
Universitat de Barcelona
We discuss the formation of a vortex polycrystal in type II superconductors from the competition between pinning and elastic forces. We compute the elastic energy of a deformed grain boundary, which is strongly nonlocal, and obtain the depinning stress for weak and strong pinning. Our estimates for the grain size dependence on the magnetic field strength are in good agreement with previous experiments on NbMo. Finally, we discuss the effect of thermal noise on grain growth.
06-07-2010
Superconductivitat
Cristal·lografia
Superconductivity
Crystallography
(c) American Physical Society, 2004
Artículo
American Physical Society
         

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Moretti, Paolo; Miguel López, María del Carmen; Zaiser, Michael; Zapperi, Stefano
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Moretti, Paolo; Miguel López, María del Carmen; Zapperi, Stefano