TY - JOUR
T1 - Shape, width, and replicas of π bands of single-layer graphene grown on Si-terminated vicinal SiC(0001)
AU - Nakatsuji, Kan
AU - Shibata, Yuki
AU - Niikura, Ryota
AU - Komori, Fumio
AU - Morita, Kouhei
AU - Tanaka, Satoru
PY - 2010/7/26
Y1 - 2010/7/26
N2 - Massless π bands of graphene grown on a SiC(0001) substrate can be affected by the scattering at the boundaries and the interface superstructure. We investigated the π band structure and width of the single- and double-layer graphenes grown on a vicinal SiC(0001) substrate using angle-resolved photoemission spectroscopy. The π electron scattering at the substrate steps makes the spectrum width anisotropic but no difference occurs in the π band shape. Quasi- 2×2 replicas of the π band due to the interface 6√3×6√3R30°superstructure were observed in the single-layer graphene while they were absent in the double-layer graphene.
AB - Massless π bands of graphene grown on a SiC(0001) substrate can be affected by the scattering at the boundaries and the interface superstructure. We investigated the π band structure and width of the single- and double-layer graphenes grown on a vicinal SiC(0001) substrate using angle-resolved photoemission spectroscopy. The π electron scattering at the substrate steps makes the spectrum width anisotropic but no difference occurs in the π band shape. Quasi- 2×2 replicas of the π band due to the interface 6√3×6√3R30°superstructure were observed in the single-layer graphene while they were absent in the double-layer graphene.
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U2 - 10.1103/PhysRevB.82.045428
DO - 10.1103/PhysRevB.82.045428
M3 - Article
AN - SCOPUS:77956686244
SN - 1098-0121
VL - 82
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 4
M1 - 045428
ER -