Electric-field controlled spin in bilayer triangular graphene quantum dots

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.84.035425
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TypeArticle
Journal titlePhysical review. B, Condensed matter and materials physics
Volume84
Issue3
Pages035425-1035425-5; # of pages: 5
AbstractWe present theoretical results based on mean-field and exact many-body approaches showing that in bilayer triangular graphene quantum dots with zigzag edges, the magnetism can be controlled by an external vertical electric field. We demonstrate that without electric field, the spins of the two layers of the quantum dot interact ferromagnetically. At a critical value of the electric field, the total spin of the bilayer structure can be turned off or reduced to a single-localized spin, a qubit isolated from contacts and free from interaction with nuclear spins.
Publication date
PublisherAmerican Physical Society
LanguageEnglish
AffiliationNRC Institute for Microstructural Sciences; National Research Council Canada
Peer reviewedYes
NPARC number19302708
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Record identifier8cf3e9f5-8dd2-435f-ac0a-23f348a61336
Record created2012-01-20
Record modified2016-05-09
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