Strain-induced modulation of magnetic interactions in graphene
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Journal ArticleDate:
2012Access:
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S. R. Power, P. D. Gorman, J. M. Duffy, and M. S. Ferreira, Strain-induced modulation of magnetic interactions in graphene, Physical Review B, 86, 2012, 195423-Download Item:
PhysRevB.86.195423(1).pdf (Published (publisher's copy)) 294.8Kb
Abstract:
The ease with which the physical properties of graphene can be tuned suggests a wide range of possible
applications. Recently, strain engineering of these properties has been of particular interest. Possible spintronic
applications of magnetically doped graphene systems have motivated recent theoretical investigations of the
so-called Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between localized moments in graphene. In this
work a combination of analytic and numerical techniques are used to examine the effects of uniaxial strain on such
an interaction. A range of interesting features are uncovered depending on the separation and strain directions.
Amplification, suppression, and oscillatory behavior are reported as a function of the strain and mathematically
transparent expressions predicting these features are derived. Since a wide range of effects, including overall
moment formation and magnetotransport response, are underpinned by such interactions we predict that the
ability to manipulate the coupling by applying strain may lead to interesting spintronic applications.
Sponsor
Grant Number
Science Foundation Ireland (SFI)
SFI 11/RFP.1/MTR/3083
Author's Homepage:
http://people.tcd.ie/ferreirmhttp://people.tcd.ie/stpower
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PUBLISHED
Author: Ferreira, Mauro; Power, Stephen
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Physical Review B86
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Full text availableKeywords:
grapheneSubject (TCD):
Nanoscience & MaterialsLicences: