2013/09/18 by J. I. Vestgården, J. I. Vestgarden, Y. M. Galperin +4
Engineering · Physics and Astronomy · #FOS: Physical sciences #Fluid Dynamics and Thin Films #Physics of Superconductivity and Magnetism #Superconductivity (cond-mat.supr-con) #Theoretical and Computational Physics #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.1309.4641
4 pages, 2 figures
arxiv created 2013/09/18 · openalex publication_date 2013/09/18 · arxiv updated 2013/09/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The penetration of transverse magnetic flux into a thin superconducting square film in the flux flow state is considered by numerical simulation. Due to the film self-field, the governing equations are nonlinear, and in combination with the finite viscosity of the moving vortices, this sets up a dynamical barrier for flux penetration into the sample. The corresponding magnetization loop is hysteric, with the peak in magnetization shifted from the zero position. The magnetic field in increasing applied field is found to form a well-defined front of propagation. Numerical estimates shows that the dynamical barrier should be measurable on films with low volume pinning.