Abstract
The creation of artificial pinning centers significantly influences the critical current density of type-II superconductors. Consequently, substantial research efforts have been directed toward the design and optimization of pinning structures within superconducting materials. In this study, the influence of pinning centers on the critical current density of superconducting tapes is examined. A triangular and moiré triangular pinning lattice is simulated, and the corresponding Langevin equation is formulated by considering various forces, including vortex-vortex interaction, vortex-pinning interaction, and thermal fluctuation forces. Vortex dynamics is examined through molecular dynamics simulations, which are employed to determine the associated critical current densities. The results demonstrate that increasing the pinning force and the radius of the pinning centers leads to a significant enhancement in the critical current density.