Numerical simulation of vortex arrays in thin superconducting films

Carlos Bolech; Gustavo C. Buscaglia; A. López

doi:10.1103/PhysRevB.52.R15719

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Numerical simulation of vortex arrays in thin superconducting films

Carlos Bolech, Gustavo C. Buscaglia, A. López

DOI 10.1103/PhysRevB.52.R15719 · Physical Review B

T1

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Abstract

Numerical simulations of the evolution of the order parameter and the vector potential in thin type-II superconducting films are reported. The theoretical framework is provided by the well-known time-dependent Ginzburg-Landau (TDGL) equations coupled with the Maxwell equations. The external field is applied parallel to the surfaces. Several maxima appear in the magnetization curve, a phenomenon that has been observed in experiments and up to now only explained using a London approach. It is proved that these maxima are indeed predicted by the full TDGL approach, and are not necessarily linked with structural changes in the vortex lattice. A mechanism for the appearance of magnetization maxima in finite samples is identified, based on the behavior of surface supercurrents.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBaCuO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown