Artículos de revistas
Crossover between macroscopic and mesoscopic regimes of vortex interactions in type-II superconductors
Fecha
2012-06-11Registro en:
Physical Review B - Condensed Matter and Materials Physics, v. 85, n. 21, 2012.
1098-0121
1550-235X
10.1103/PhysRevB.85.214511
2-s2.0-84862190658
Autor
Universidade Estadual Paulista (UNESP)
Universidade Federal de São Carlos (UFSCar)
Norwegian Academy of Science and Letters
Institución
Resumen
In the present work we report the existence of a crossover between the macroscopic and mesoscopic regimes of vortex interactions in type-II superconductors. Our findings rely on a systematic procedure to determine this crossover, which is based on the influence of the surface on the vortex structure of small superconductors. An adjacent result that we have found is that near this regime transformation, the vortex lattice develops a progressive change of symmetry, from square to hexagonal, which is intimately related to the meso-to-macro crossover. Our numerical simulations have been done for a long superconducting cylinder of square cross section for a wide range of length scales and temperatures. © 2012 American Physical Society.