Induced Anisotropy by the Inclusion of Defects of Variable $$T_\mathrm{c}$$ T c in a Superconducting Disk

Abstract

Static and non-static properties of the superconducting vortex state in a splice of weak and strong superconducting regions were studied. We considered a superconducting disk with triangular and circular defects, which lead to the appearance of anisotropy in the sample. This anisotropy is included in the time-dependent Ginzburg–Landau equations through a varied \(T_\mathrm{c}\), which leads to distinct differences in the magnetization, supercurrent, vorticity, and free energy curves. Several unconventional vortex states were found, some comprising vortex clusters or exhibiting asymmetry, which are formed owing to the competing interactions of vortices with different Meissner currents that can be found in the sample due to anisotropy.