Self organization of a hexagonal network of quasi-free-standing monolayer graphene nanoribbons

被引：6
|
作者：
Murata, Y. [1 ]
Takamura, M. [1 ]
Kageshima, H. [1 ]
Hibino, H. [1 ]
机构：
[1] NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan
来源：
PHYSICAL REVIEW B | 2013年 / 87卷 / 16期
关键词：
SURFACE;
D O I：
10.1103/PhysRevB.87.165408
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigated the H desorption process and the surface structure after H desorption in quasi-free-standing monolayer graphene (QFMLG) on silicon carbide (SiC). In situ scanning tunneling microscopy observations revealed that H adatoms preferentially desorb at SiC step edges. We found self-organization of a hexagonal network of QFMLG nanoribbons during H desorption. The surface structure on the nanoribbons indicates that electron scattering occurs at the boundary between the QFMLG and H-desorbed regions. The configuration of the network is determined by the formation energy of the boundary and by the surface stress energy. DOI: 10.1103/PhysRevB.87.165408
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页数：4
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