Driven depinning of vortices in irradiated microbridge single-crystals of Bi-2212

Autor: P. Topart, Jérôme Plain, L. Ammor, D. Plessis, B. Pignon, Ch. Simon, Alain Pautrat, Antoine Ruyter, Antoine Maignan
Rok vydání: 2006
Předmět:
Zdroj: Journal of Physics and Chemistry of Solids. 67:468-471
ISSN: 0022-3697
DOI: 10.1016/j.jpcs.2005.10.020
Popis: Vortex depinning and vortex dynamics are investigated by magnetotransport measurements on two irradiated microbridge single-crystals of Bi-2212. At low temperatures, a crossover from an elastic dynamic to a plastic has been evidenced when the applied magnetic field B is ranging from B B Φ to B > B Φ (where B Φ is the matching field). In addition, the study of the vortex dynamics according to the temperature clearly highlights two transitions at high temperatures. The first one is associated with the limit of the elastic depinning, and the second one is a transition from a viscous-elastic behavior (with I C ≠0) to a purely viscous one (with I C =0).
Databáze: OpenAIRE