Document Detail


Collective interaction-driven ratchet for transporting flux quanta.
MedLine Citation:
PMID:  11690295     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
We propose and study a novel way to produce a dc transport of vortices when applying an ac electrical current to a sample. Specifically, we study superconductors with a graduated random pinning density, which transports interacting vortices as a ratchet system. We show that a ratchet effect appears as a consequence of the long range interactions between the vortices. The pinned vortices create an asymmetric periodic flux density profile, which results in an asymmetric effective potential for the unpinned interstitial vortices. The latter exhibit a net longitudinal rectification under an applied transverse ac electric current.
Authors:
C J Olson; C Reichhardt; B Jankó; F Nori
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Publication Detail:
Type:  Journal Article     Date:  2001-10-05
Journal Detail:
Title:  Physical review letters     Volume:  87     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2001 Oct 
Date Detail:
Created Date:  2001-11-05     Completed Date:  2002-01-04     Revised Date:  2003-10-31    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  177002     Citation Subset:  -    
Affiliation:
Theoretical and Applied Physics Divisions, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
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