Directional vortex motion guided by artificially induced mesoscopic potentials
超导电性
2009-11-10 v1
摘要
Rectangular pinning arrays of Ni dots define a potential landscape for vortex motion in Nb films. Magnetotransport experiments in which two in-plane orthogonal electrical currents are injected simultaneously allow selecting the direction and magnitude of the Lorentz force on the vortex-lattice, thus providing the angular dependence of the vortex motion. The background dissipation depends on angle at low magnetic fields, which is progressively smeared out with increasing field. The periodic potential locks in the vortex motion along channeling directions. Because of this, vortex-lattice direction of motion is up to 85o away from the applied Lorentz force direction.
引用
@article{arxiv.cond-mat/0307432,
title = {Directional vortex motion guided by artificially induced mesoscopic potentials},
author = {J. E. Villegas and E. M. Gonzalez and M. I. Montero and Ivan K. Schuller and J. L. Vicent},
journal= {arXiv preprint arXiv:cond-mat/0307432},
year = {2009}
}
备注
PDF file includes figures