2005/08/31 by K. Sasaki, Ken-ichi Sasaki, Shuichi Murakami +3 · 158 citations
Materials Science · Mathematics · Physics and Astronomy · #Chemical and Physical Properties of Materials #Condensed matter physics #Density of states #Electron #Enhanced Data Rates for GSM Evolution #Fermi energy #Fermi level #Geometry #Graphene #Graphene research and applications #Materials science #Mathematics #Nanotechnology #Physics #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #Ribbon #Scanning tunneling spectroscopy #Zero-point energy #Zigzag #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.2181274
published in Applied Physics Letters 88(11), 113110-1-113110-3 (American Institute of Physics) · 4 pages, 2 figures, final version to appear in Applied Physics Letters
openalex publication_date 2006/03/13 · arxiv created 2006/03/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
It has been known that edge states of a graphite ribbon are zero-energy, localized eigen-states. We show that next nearest-neighbor hopping process decreases the energy of the edge states at zigzag edge with respect to the Fermi energy. The energy reduction of the edge states is calculated analytically by first-order perturbation theory and numerically. The resultant model is consistent with the peak of recent scanning tunneling spectroscopy measurements.