Structure and properties of chemically prepared nanographene islands characterized by scanning tunneling microscopy

Mayu Yamamoto; Seiji Obata; Koichiro Saiki

doi:10.1002/sia.3583

Structure and properties of chemically prepared nanographene islands characterized by scanning tunneling microscopy

Mayu Yamamoto, Seiji Obata, Koichiro Saiki

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

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).

Original language	English
Pages (from-to)	1637-1641
Number of pages	5
Journal	Surface and Interface Analysis
Volume	42
Issue number	10-11
DOIs	https://doi.org/10.1002/sia.3583
Publication status	Published - Oct 1 2010
Externally published	Yes

Keywords

Chemical vapor deposition
Edge state
Graphene
Scanning tunneling microscopy
Zigzag edge

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1002/sia.3583

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title = "Structure and properties of chemically prepared nanographene islands characterized by scanning tunneling microscopy",

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).",

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T1 - Structure and properties of chemically prepared nanographene islands characterized by scanning tunneling microscopy

AU - Yamamoto, Mayu

AU - Obata, Seiji

AU - Saiki, Koichiro

PY - 2010/10/1

Y1 - 2010/10/1

N2 - 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).

AB - 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).

KW - Chemical vapor deposition

KW - Edge state

KW - Graphene

KW - Scanning tunneling microscopy

KW - Zigzag edge

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JO - Surface and Interface Analysis

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IS - 10-11

ER -

Structure and properties of chemically prepared nanographene islands characterized by scanning tunneling microscopy

Abstract

Keywords

ASJC Scopus subject areas

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