Ultra-fast kinematic vortices in mesoscopic superconductors : the effect of the self-field
Leonardo Rodrigues Cadorim, Alexssandre de Oliveira Junior & Edson Sardella
ARTIGO
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Agradecimentos: We thank the UNESP (PROPG-Pró-Reitoria de Pós-Graduação) for financial support. ES thanks the Brazilan Agency FAPESP for financial support (process number 12/04388-0). LRC and ADJ thank FAPESP for grants (Processes Numbers 20/03947-2 and 15/21189-0)
Abstract: Within the framework of the generalized time-dependent Ginzburg-Landau equations, we studied the influence of the magnetic self-field induced by the currents inside a superconducting sample driven by an applied transport current. The numerical simulations of the resistive state of the...
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Abstract: Within the framework of the generalized time-dependent Ginzburg-Landau equations, we studied the influence of the magnetic self-field induced by the currents inside a superconducting sample driven by an applied transport current. The numerical simulations of the resistive state of the system show that neither material inhomogeneity nor a normal contact smaller than the sample width are required to produce an inhomogeneous current distribution inside the sample, which leads to the emergence of a kinematic vortex-antivortex pair (vortex street) solution. Further, we discuss the behaviors of the kinematic vortex velocity, the annihilation rates of the supercurrent, and the superconducting order parameters alongside the vortex street solution. We prove that these two latter points explain the characteristics of the resistive state of the system. They are the fundamental basis to describe the peak of the current-resistance characteristic curve and the location where the vortex-antivortex pair is formed
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FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
12/04388-0; 15/21189-0; 20/03947-2
Aberto
Ultra-fast kinematic vortices in mesoscopic superconductors : the effect of the self-field
Leonardo Rodrigues Cadorim, Alexssandre de Oliveira Junior & Edson Sardella
Ultra-fast kinematic vortices in mesoscopic superconductors : the effect of the self-field
Leonardo Rodrigues Cadorim, Alexssandre de Oliveira Junior & Edson Sardella
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Scientific reports (Fonte avulsa) |