Vortex core deformation and stepper motor behavior in a superconducting ratchet
Superconductivity
2011-04-07 v1
Abstract
We investigated experimentally the frequency dependence of a superconducting vortex ratchet effect by means of electrical transport measurements and modeled it theoretically using the time dependent Ginzburg-Landau formalism. We demonstrate that the high frequency vortex behavior can be described as a discrete motion of a particle in a periodic potential, i.e. the so called stepper motor behavior. Strikingly, in the more conventional low frequency response a transition takes place from an Abrikosov vortex rectifier to a phase slip line rectifier. This transition is characterized by a strong increase in the rectified voltage and the appearance of a pronounced hysteretic behavior.
Cite
@article{arxiv.1104.1129,
title = {Vortex core deformation and stepper motor behavior in a superconducting ratchet},
author = {J. Van de Vondel and V. N. Gladilin and A. V. Silhanek and W. Gillijns and J. Tempere and J. T. Devreese and V. V. Moshchalkov},
journal= {arXiv preprint arXiv:1104.1129},
year = {2011}
}
Comments
4 pages, 4 figures