Phase-Locking of Vortex Lattices Interacting with Periodic Pinning
Superconductivity
2009-10-31 v1
Abstract
We examine Shapiro steps for vortex lattices interacting with periodic pinning arrays driven by AC and DC currents. The vortex flow occurs by the motion of the interstitial vortices through the periodic potential generated by the vortices that remain pinned at the pinning sites. Shapiro steps are observed for fields B_{\phi} < B < 2.25B_{\phi} with the most pronouced steps occuring for fields where the interstitial vortex lattice has a high degree of symmetry. The widths of the phase-locked current steps as a function of the magnitude of the AC driving are found to follow a Bessel function in agreement with theory.
Cite
@article{arxiv.cond-mat/9912381,
title = {Phase-Locking of Vortex Lattices Interacting with Periodic Pinning},
author = {Charles Reichhardt and Richard T. Scalettar and Gergely T. Zimanyi and Niels Gronbech-Jensen},
journal= {arXiv preprint arXiv:cond-mat/9912381},
year = {2009}
}
Comments
5 pages 5 postscript figures