Abstract:
Transport properties of anisotropic superconductor with point, columnar and columnar tilted defects have been analyzed using Monte-Carlo method. It was shown that for columnar tilted defects the critical current dependence on anisotropy $\gamma$ weakens as $\gamma$ increases and vanishes at certain $\gamma$. The $S$-type nonlinearity of current-voltage characteristics has been shown for three-dimensional vortex system in presence of ferromagnetic defects.
Keywords:layered superconductors, vortex pinning, magnetic nanoparticles, Monte Carlo method.
UDC:
538.9
Received: 05.12.2016 Received in revised form: 14.12.2017 Accepted: 20.03.2018