期刊
PHYSICAL REVIEW B
卷 85, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.235424
关键词
-
资金
- Brazilian agencies FAPESP (Fundacao de Amparo a Pesquisa do Estado de Sao Paulo)
- CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico)
- Portuguese agency FCT (Fundacao para a Ciencia e Tecnologia) [PTDC/FIS/100968/2008]
- Deutsche Forschungsgemeinschaft [SFB 634]
- Fundação para a Ciência e a Tecnologia [PTDC/FIS/100968/2008] Funding Source: FCT
In the present work, we investigate how structural defects in graphene can change its transport properties. In particular, we show that breaking of the sublattice symmetry in a graphene monolayer overcomes the Klein effect, leading to confined states of massless Dirac fermions. Experimentally, this corresponds to chemical bonding of foreign atoms to carbon atoms, which attach themselves to preferential positions on one of the two sublattices. In addition, we consider the scattering off a tensor barrier, which describes the rotation of the honeycomb cells of a given region around an axis perpendicular to the graphene layer. We demonstrate that in this case the intervalley mixing between the Dirac points emerges, and that Klein tunneling occurs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据