Ginzburg-Landau Calculations of Star-shaped Mo80Ge20 Superconducting Small Plates

Our study focused on vortex states in small star-shaped Mo80Ge20 plates. Vortex states are greatly influenced by the sample geometry, temperature and magnetic field, and could be exotic. We already have conducted experimental studies on small star- shaped Mo80Ge20 plates. In this work, we present the theoretical calculations on vortex structures in star-shaped superconducting. The numerical calculations of Ginzburg–Landau equation have been carried out with the aid of the finite element method, which is convenient to treat an arbitrarily shaped superconductor. We found that good agreement between theory and experiment. A distinctive feature of a star-shaped plate predicted is that the superconductivity is destroyed from the inscribed circle of the star when the magnetic field increases. Our theoretical studies will be compared to the experimental studies.