Shape, width, and replicas of π bands of single-layer graphene grown on Si-terminated vicinal SiC(0001)

Kan Nakatsuji, Yuki Shibata, Ryota Niikura, Fumio Komori, Kouhei Morita, Satoru Tanaka

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number045428
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume82
Issue number4
DOIs
Publication statusPublished - Jul 26 2010

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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