2006/12/15 by V. I. Marconi, Verónica I. Marconi · 1 citation
Computer Science · Physics and Astronomy · #Nonlinear Dynamics and Pattern Formation #Quantum and electron transport phenomena #cond-mat.supr-con #stochastic dynamics and bifurcation
paper · pdf · doi:10.1103/physrevlett.98.047006
published as Phys. Rev. Lett. 98, 047006 (2007) · 4 pages, 5 figures. Accepted for publication in Phys. Rev. Lett
arxiv created 2006/12/15 · openalex publication_date 2007/01/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A detailed numerical study on the directed motion of ac-driven vortices and antivortices in 2D Josephson junction arrays with an asymmetric periodic pinning potential is reported. dc-voltage rectification shows a strong dependence on vortex density as well as an inversion of the vortex flow direction with ac amplitude for a wide range of vortex density around f = 1/2 (f = Ha(2)/Phi(0)), in good agreement with recent experiments by Shalóm and Pastoriza [Phys. Rev. Lett. 94, 177001 (2005)10.1103/PhysRevLett.94.177001]. The study of vortex structures, spatial and temporal correlations, and vortex-antivortex pairs formation gives insight into a purely collective mechanism behind the current reversal effect.