Document Detail


Graphene as a non-magnetic spin current lens.
MedLine Citation:
PMID:  21474882     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In spintronics, the ability to transport magnetic information often depends on the existence of a spin current traveling between two different magnetic objects acting as the source and probe. A large fraction of this information never reaches the probe and is lost because the spin current tends to travel omnidirectionally. We propose that a curved boundary between a gated and a non-gated region within graphene acts as an ideal lens for spin currents despite being entirely of non-magnetic nature. We show as a proof of concept that such lenses can be utilized to redirect the spin current that travels away from a source onto a focus region where a magnetic probe is located, saving a considerable fraction of the magnetic information that would be otherwise lost.
Authors:
F S M Guimarães; A T Costa; R B Muniz; M S Ferreira
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-08
Journal Detail:
Title:  Journal of physics. Condensed matter : an Institute of Physics journal     Volume:  23     ISSN:  1361-648X     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101165248     Medline TA:  J Phys Condens Matter     Country:  -    
Other Details:
Languages:  ENG     Pagination:  175302     Citation Subset:  -    
Affiliation:
Instituto de Física, Universidade Federal Fluminense, Niterói, Brazil.
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