Edge reconstructions induce magnetic and metallic behavior in zigzag graphene nanoribbons

Dutta, Sudipta ; Pati, Swapan K. (2010) Edge reconstructions induce magnetic and metallic behavior in zigzag graphene nanoribbons Carbon, 48 (15). pp. 4409-4413. ISSN 0008-6223

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.carbon.2010.07.057

Abstract

The edge reconstructions of zigzag graphene nanoribbons with one and two lines of alternating fused five and seven membered rings along one edge with hydrogen passivation are studied using first principles density functional theory. Reconstructions on one edge stabilize the systems in a metallic ground state with finite magnetic moment. The reconstructed edge suppresses the local spin density of atoms and contributes a finite density of states at the Fermi energy. Our study shows the possibilities of fabricating the metallic electrodes for semiconducting graphene devices with full control over their magnetic behavior without any lattice mismatch between leads and the channel.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:60838
Deposited On:12 Sep 2011 07:25
Last Modified:12 Sep 2011 07:25

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