Journal
PHYSICAL REVIEW B
Volume 84, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.115406
Keywords
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Funding
- NSF [DMR10-1006184]
- Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering Division, US Department of Energy [DE-AC02-05CH11231]
- CNPq
- CAPES
- FAPERJ
- INCT Nanomateriais de Carbono
- ONR MURI
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1006184] Funding Source: National Science Foundation
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Using a model Hamiltonian approach including electron-electron interactions, we systematically investigate the electronic structure and magnetic properties of chiral graphene nanoribbons. We show that the presence of magnetic edge states is an intrinsic feature of smooth graphene nanoribbons with chiral edges, and discover a number of structure-property relations. Specifically, we study the dependence of magnetic moments and edge-state energy splittings on the nanoribbon width and chiral angle as well as the role of environmental screening effects. Our results address a recent experimental observation of signatures of magnetic ordering in chiral graphene nanoribbons and provide an avenue toward tuning their properties via the structural and environmental degrees of freedom.
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