Characterization of pinning and vortex motion in thin superconducting microbridges

Autor:	Ph. Lecoeur, T. D. Doan, P. Bernstein, Myriam Pannetier, J. F. Hamet
Rok vydání:	2000
Předmět:	Superconductivity Physics Yield (engineering) Condensed matter physics Field (physics) Condensed Matter::Superconductivity Vorticity Pinning force Type-II superconductor Vortex Magnetic field
Zdroj:	Physical Review B. 62:15162-15171
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.62.15162
Popis:	We show that transport measurements carried out with and without a low applied magnetic field enable one to characterize the vortex dynamics in high-Tc superconducting films. The application of a low magnetic field induces a modulation of the critical current that depends on the process involved when the vortices are set in motion. Current-voltage measurements with no applied field yield information on the pinning energy, the pinning sites density, and the way the vortices are moving. Measurements carried out on a set of YBa2Cu3O7 microbridges show that the vortex dynamics depend primarily on the pinning sites density. This quantity proves to be strongly dependent on the thickness of the superconducting film.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::03b2aa1dcc2721555f53fe21cd60f9fb https://doi.org/10.1103/physrevb.62.15162 Zobrazit plný text záznamu