Correlation between morphology and transport properties of quasi-free-standing monolayer graphene

被引：22
|
作者：
Murata, Yuya [1 ,2 ]
Mashoff, Torge [3 ]
Takamura, Makoto [4 ]
Tanabe, Shinichi [4 ]
Hibino, Hiroki [4 ]
Beltram, Fabio [1 ,2 ,3 ]
Heun, Stefan [1 ,2 ]
机构：
[1] Ist Nanosci CNR, NEST, I-56127 Pisa, Italy
[2] Scuola Normale Super Pisa, I-56127 Pisa, Italy
[3] Ist Italiano Tecnol, Ctr Nanotechnol Innovat NEST, I-56127 Pisa, Italy
[4] NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan
来源：
APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 22期
关键词：
D O I：
10.1063/1.4902988
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We investigate the morphology of quasi-free-standing monolayer graphene (QFMLG) formed at several temperatures by hydrogen intercalation and discuss its relationship with transport properties. Features corresponding to incomplete hydrogen intercalation at the graphene-substrate interface are observed by scanning tunneling microscopy on QFMLG formed at 600 and 800 degrees C. They contribute to carrier scattering as charged impurities. Voids in the SiC substrate and wrinkling of graphene appear at 1000 degrees C, and they decrease the carrier mobility significantly. (c) 2014 AIP Publishing LLC.
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页数：4
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