Clustering of Abrikosov vortices in intertype superconductors in the presence of pinning centers

In this work, the processes of clusterization and melting of a vortex lattice with an intertype potential of intervortex interaction were studied. Numerical modeling was performed within the framework of the Lawrence-Doniak model using the Monte Carlo method. It was shown that the structure obtained in the intertype superconductor is more stable to field and temperature changes than the vortex structure of a type II superconductor. The process of melting of the cluster lattice is shown, including in the presence of pinning centers. Differences in the processes of melting of the vortex lattice of a defective and defect-free superconductor are shown.