Geometrical surface vortex pinning in superconducting films

Autor: A. Yu. Prokhorov, A. I. Kosse, Yu. E. Kuzovlev, G. G. Levchenko, Yu. V. Medvedev, Pavlo Mikheenko, V. A. Khokhlov
Rok vydání: 2003
Předmět:
Zdroj: Journal of Experimental and Theoretical Physics Letters. 78:379-383
ISSN: 1090-6487
0021-3640
Popis: A model is proposed for vortex pinning in a superconducting film with a rough surface. The model relates the critical current to the steepness of the surface relief and, at a high vortex concentration, to the distance between neighboring steepness maxima on the paths of vortex motion. The dependence of the critical current density on the thickness of a high-Tc superconducting film is measured in a weak magnetic field. Its behavior can be explained by the pinning at the stepped surface relief.
Databáze: OpenAIRE