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26 April 2024

» arxiv » 1104.1129

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Vortex core deformation and stepper motor behavior in a superconducting ratchet
J. Van de Vondel ; V. N. Gladilin ; A.V. Silhanek ; W. Gillijns ; J. Tempere ; J. T. Devreese ; V. V. Moshchalkov ;
Date:	6 Apr 2011
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.
Source:	arXiv, 1104.1129
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