Manifestation of vortex depinning transition in nonlinear current-voltage characteristics of polycrystalline superconductor Y_{1-x}Pr_{x}Ba_2Cu_3O_7

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We present our recent results on the temperature dependence of current-voltage characteristics for polycrystalline Y_{1-x}Pr_{x}Ba_2Cu_3O_7 superconductors with x = 0.0, 0.1 and 0.3. The experimental results are found to be reasonably well fitted for all samples by a power like law. According to the theoretical interpretation of the obtained results, nonlinear deviation of our current-voltage characteristics curves from Ohmic behavior below Tc is attributed to the manifestation of dissipation processes related to the current induced depinning of Abrikosov vortices.
Accepted for publication in PLA

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Superconductivity

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http://salesiana.dossiersoluciones.com/handle/123456789/164530

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0805.4317
 http://arxiv.org/abs/0805.4317
 Physics Letters A 372, 5089 (2008)
 doi:10.1016/j.physleta.2008.05.073

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arXiv