Uniaxial deformation of graphene Dirac cone on a vicinal SiC substrate

Kan Nakatsuji, Tsuguo Yoshimura, Fumio Komori, Kouhei Morita, Tanaka Satoru

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Uniaxial deformation of the conical conduction band of single-layer graphene is investigated on a SiC(0001) substrate vicinal to the [11̄00] direction using angle-resolved photoemission spectroscopy. The substrate surface consists of highly anisotropic terraces with sub-10 nm width in the [11̄00] direction as confirmed by scanning tunneling microscopy and atomic force microscopy. Graphene covers all the substrate surface including the substrate steps. The substrate provides a unidirectional potential for the graphene on that. The group velocities of the conduction band at K points are reduced in the direction parallel to the strong potential modulation while they are unchanged in the perpendicular direction.

Original languageEnglish
Article number195416
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number19
DOIs
Publication statusPublished - May 9 2012

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Graphite
Graphene
Cones
cones
graphene
Substrates
Conduction bands
conduction bands
Scanning tunneling microscopy
Photoelectron spectroscopy
group velocity
scanning tunneling microscopy
Atomic force microscopy
photoelectric emission
Modulation
atomic force microscopy
modulation
Direction compound
spectroscopy

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Uniaxial deformation of graphene Dirac cone on a vicinal SiC substrate. / Nakatsuji, Kan; Yoshimura, Tsuguo; Komori, Fumio; Morita, Kouhei; Satoru, Tanaka.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 85, No. 19, 195416, 09.05.2012.

Research output: Contribution to journalArticle

Nakatsuji, Kan ; Yoshimura, Tsuguo ; Komori, Fumio ; Morita, Kouhei ; Satoru, Tanaka. / Uniaxial deformation of graphene Dirac cone on a vicinal SiC substrate. In: Physical Review B - Condensed Matter and Materials Physics. 2012 ; Vol. 85, No. 19.
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