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Dynamics of superconducting vortices driven by oscillatory forces in the plastic flow regime
D. Pérez Daroca, G. Pasquini, G. S. Lozano +1
We study experimentally and theoretically, the reorganization of superconducting vortices driven by oscillatory forces near the plastic depinning transition. We show that the syste…
Glassiness in vortex matter in MgB2 probed by a novel scaling method for creep analysis
G. Pasquini, A. Moreno, A. Serquis +2
The glassy dynamics is a consequence of the elastic properties of the vortex matter, and in principle may occur in any superconductor. However, whereas a large amount of experiment…
Ordered, disordered and coexistent stable vortex lattices in NbSe_2 single crystals
G. Pasquini, D. Perez Daroca, C. Chiliotte +2
It is commonly accepted that the peak effect (PE) in the critical current density of type II superconductors is a consequence of an order-disorder transition in the vortex lattice…
Peak effect in YBCO crystals: Statics and dynamics of the vortex lattice
G. Pasquini, V. Bekeris
Oscillatory dynamics and quasi-static Campbell regime of the vortex lattice (VL) in twinned YBa2Cu3O7 single crystals has been explored at low fields near the peak effect (PE) regi…
Oscillatory dynamics of a superconductor vortex lattice in high amplitude ac magnetic fields
A. J. Moreno, S. O. Valenzuela, G. Pasquini +1
In this work we study by ac susceptibility measurements the evolution of the solid vortex lattice mobility under oscillating forces. Previous work had already shown that in YBCO si…
Angular dependent vortex dynamics in superconductors with columnar defects
Leonardo Civale, Alejandro V. Silhanek, Gabriela Pasquini
We explore in detail the angular dependent vortex dynamics in type II superconductors with aligned columnar defects introduced by irradiation with very energetic heavy-ions. We use…