Document Type
Article
Date
10-10-2007
Language
English
Disciplines
Physics
Description/Abstract
The controlled motion of objects through narrow channels is important in many fields. We have fabricated asymmetric weak-pinning channels in a superconducting thin-film strip for controlling the dynamics of vortices. The lack of pinning allows the vortices to move through the channels with the dominant interaction determined by the shape of the channel walls. We present measurements of vortex dynamics in the channels and compare these with similar measurements on a set of uniform-width channels. While the uniform-width channels exhibit a symmetric response for both directions through the channel, the vortex motion through the asymmetric channels is quite different, with substantial asymmetries in both the static depinning and dynamic flux flow. This vortex ratchet effect has a rich dependence on magnetic field and driving force amplitude.
Recommended Citation
Plourde, Britton; Heitmann, T. W.; Song, C.; DeFeo, M. P.; and Yu, Kang, "Asymmetric Weak-Pinning Superconducting Channels: Vortex Ratchets" (2007). Physics - All Scholarship. 129.
https://surface.syr.edu/phy/129
Source
Harvested from Arxiv.org
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.
Additional Information
4pages, 4figures, accepted by PRB More information at http://arxiv.org/abs/0710.2076
First author and SU author listed for additional authors see the article.