INVESTIGADORES
MARCONI Veronica Iris
artículos
Título:
Voltage rectification in two dimensional Josephson Junction Arrays
Autor/es:
VERONICA I. MARCONI
Revista:
PHYSICA C - SUPERCONDUTIVITY
Editorial:
Elsevier
Referencias:
Año: 2006 vol. 437 p. 195 - 198
ISSN:
0921-4534
Resumen:
We study numerically the directed motion of vortices (antivortices) under an applied ac bias in two-dimensional Josephson junctionarrays (JJA) with an asymmetrically modulated periodic vortex pinning potential. We find that the ratchet effect in large 2D JJA can beobtained using the RSJ model for the overdamped vortex dynamics. The rectification effect shows a strong dependence on vortex densityas well as an inversion of the vortex flow direction with the ac amplitude, for a wide range of magnetic field around f = 1/2 (f being thevortex density). Our results are in good agreement with very recent experiments by D.E. Shalom and H. Pastoriza [D.E. Shalom, H.Pastoriza, Phys. Rev. Lett. 94 (2005) 177001].
