Microscopic study of the intermediate mixed state in intertype superconductors

• Vyacheslav D. Neverov,
• Alexander V. Kalashnikov,
• Andrey V. Krasavin and
• Alexei Vagov

Beilstein J. Nanotechnol. 2026, 17, 57–62, doi:10.3762/bjnano.17.5

• vortex–vortex interaction potential. This behavior indicates the coexistence of long-range attraction with short-range repulsion, which is characteristic of the IT superconductivity regime. At weaker coupling (g = 3.2), the system exhibits type-I behavior at high temperature: The three vortices merge

Vortex lattices of layered HTSCs at different vortex–vortex interaction potentials

• Valerii P. Lenkov,
• Anastasia N. Maksimova,
• Anna N. Moroz and
• Vladimir A. Kashurnikov

Beilstein J. Nanotechnol. 2025, 16, 362–370, doi:10.3762/bjnano.16.27

• superconductors have been analyzed. Clustering of the vortex system is demonstrated. The melting of a vortex lattice with increasing temperature has been studied. Keywords: high-temperature superconductor; HTSC; intertype superconductors; Monte Carlo method; vortex lattice; vortex–vortex interaction potential

• studied in [15][16][17]. The vortex–vortex interaction potential, different from the classical one typical in type-II superconductors K0(r/λ) (r is the distance between the vortex centers) [18], is also observed in superconductors characterized by the Ginzburg–Landau parameter . A vortex structure is also

• ; magnetic field H = 400 G. Melting of a vortex lattice with increasing temperature; magnetic field H = 400 G. Magnetic field distribution for a sample with the vortex–vortex interaction potential from Equation 3 at different values of magnetic susceptibility χ0. Magnetic field distribution in the potential