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 |
Externí odkaz: |