Origin of the energy bandgap in epitaxial graphene

2008/03/20 by S. Y. Zhou, S.Y. Zhou, D.A. Siegel +11 · 3 citations
Materials Science · Physics and Astronomy · #2D Materials and Applications #Graphene research and applications #Thermal properties of materials #cond-mat.mtrl-sci #cond-mat.str-el

paper · pdf · doi:10.1038/nmat2154b

published as Nature Mat. 7, 259-260 (2008)

openalex publication_date 2008/03/20 · arxiv created 2008/04/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We studied the effect of quantum confinement on the size of the band gap in single layer epitaxial graphene. Samples with different graphene terrace sizes are studied by using low energy electron microscopy (LEEM) and angle-resolved photoemission spectroscopy (ARPES). The direct correlation between the terrace size extracted from LEEM and the gap size extracted from ARPES shows that quantum confinement alone cannot account for the large gap observed in epitaxial graphene samples.

Citations

• Edge state in graphene ribbons: Nanometer size effect and edge shape dependence

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