期刊
APPLIED PHYSICS LETTERS
卷 100, 期 26, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4731624
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资金
- National Basic Research Program of China [2011CB707601, 2009CB623702]
- National Natural Science Foundation of China [51071044, 60976003, 61006011]
- Program for New Century Excellent Talents in University [NCEF-09-0293]
- Specialized Research Fund for the Doctoral Program of Higher Education [20100092110014]
- State Key Laboratory of Bioelectronics
- Academy of Finland [134406]
- Academy of Finland (AKA) [134406, 134406] Funding Source: Academy of Finland (AKA)
Using density-functional theory calculations, we show that the electronic and magnetic properties of zigzag graphene nanoribbons (ZGNRs) are highly sensitive to large scale curvature. As the curvature increases, the system experiences a transformation from the antiferromagnetic state to a nonmagnetic state and then back to the antiferromagnetic state. The energy gap first remains almost invariant and then decreases monotonically. The results demonstrate a facile strategy to tune the electronic and magnetic properties of ZGNRs, and furthermore provide an avenue to design versatile electronic and spin devices. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4731624]
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