Otro
Surface effects on moving vortices in superconducting stripes
Registro en:
Physica C-superconductivity and Its Applications. Amsterdam: Elsevier B.V., v. 454, n. 1-2, p. 15-19, 2007.
0921-4534
10.1016/j.physc.2007.01.002
WOS:000245870100003
Autor
Reis, J. D.
Venegas, Pablo Antonio
Mello, Denise Fernandes de
Cabrera, G. G.
Resumen
Size and surface dynamical effects are investigated in thin superconducting stripes with variable width. We perform numerical simulations of the vortex dynamics, with the inclusion of the surface confining potential and a random distribution of pinning centers. To fully characterize the vortex flow, we calculate the differential resistance, the transverse diffusion coefficient, the structure factor and the intensity of the Bragg peaks, as functions of the transport force. We found that surface effects induce a premature ordering of the flux line lattice, and the system displays plastic and smectic behavior only in a very narrow range of forces. (c) 2007 Elsevier B.V. All rights reserved.