2010/06/14 by Mayu Yamamoto, Seiji Obata, Koichiro Saiki · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Graphene research and applications #Molecular Junctions and Nanostructures #Topological Materials and Phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1002/sia.3583
published as Surf. Interface Anal., 42, 1637 (2010) · 8 pages, 8 figures, 1 table
arxiv created 2010/06/14 · openalex publication_date 2010/06/22 · arxiv updated 2011/01/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Abstract Single‐layer graphene islands with a typical diameter of several nanometers were grown on a Pt (111) substrate. Scanning tunneling microscopy (STM) analysis showed most of islands are hexagonally shaped and the zigzag‐type edge predominates over the armchair‐type edge. The apparent height at the atoms on the zigzag edge is enhanced with respect to the inside atoms for a small sample bias voltage, while such an enhancement was not observed at the atoms on the armchair edge. This result provides an experimental evidence of spatially (at the zigzag edge) and energetically (at the Fermi level) localized edge state in the nanographene islands, which were prepared chemically on Pt (111). Copyright © 2010 John Wiley & Sons, Ltd.