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Title: Magnetic exchange mechanism for electronic gap opening in graphene
Authors: Rappoport, T.G.
Godoy, M.
Uchoa, B.
Dos Santos, R.R.
Castro Neto, A.H. 
Issue Date: 2011
Citation: Rappoport, T.G., Godoy, M., Uchoa, B., Dos Santos, R.R., Castro Neto, A.H. (2011). Magnetic exchange mechanism for electronic gap opening in graphene. EPL 96 (2) : -. ScholarBank@NUS Repository.
Abstract: We show within a local self-consistent mean-field treatment that a random distribution of magnetic adatoms can open a robust gap in the electronic spectrum of graphene. The electronic gap results from the localization of the charge carriers that arises from the interplay between the graphene sublattice structure and the exchange interaction between the adatoms. The size of the gap depends on the strength of the exchange interaction between carriers and localized spins and can be controlled by both temperature and external magnetic field. Furthermore, we show that an external magnetic field creates an imbalance of spin-up and spin-down carriers at the Fermi level, making doped graphene suitable for spin injection and other spintronic applications. © Europhysics Letters Association 2011.
Source Title: EPL
ISSN: 02955075
DOI: 10.1209/0295-5075/96/27010
Appears in Collections:Staff Publications

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