Edge state on hydrogen-terminated graphite edges investigated by scanning tunneling microscopy

By Y. Kobayashi, K. Fukui, T. Enoki, K. Kusakabe. 2006

335 citations recorded by the source corpus.

The edge states that emerge at hydrogen-terminated zigzag edges embedded in dominant armchair edges of graphite are carefully investigated by ultrahigh-vacuum scanning tunneling microscopy (STM) measurements. The edge states at the zigzag edges have different spatial distributions dependent on the $\ensuremath{\alpha}$- or $\ensuremath{\beta}$-site edge carbon atoms. In the case that the defects consist of a short zigzag (or a short Klein) edge, the edge state is present also near the defects. The amplitude of the edge state distributing around the defects in an armchair edge often has a prominent hump in a direction determined by detailed local atomic structure of the edge. The tight binding calculation based on the atomic arrangements observed by STM reproduces the observed spatial distributions of the local density of states.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/2dc949b0277a35b920eefa21b1c90aaa605fb506

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In Atomic and Molecular Physics, and Optics

In Materials Chemistry

Citations in the corpus

Emergence of magnetism in graphene materials and nanostructures (2010, methodology): “However, the presence of localized low-energy states at zigzag edges of graphene has been verified by means of scanning tunneling microscopy (Kobayashi et al., 2006, 2005).”
The influence of edge structure on the electronic properties of graphene quantum dots and nanoribbons. (2009, result): “Our interpretation is supported by previous STM studies where hexagonal superstructures were observed near graphite terrace edge”
First principle calculations of the electronic properties of nitrogen-doped carbon nanoribbons with zigzag edges (2008, positive): “Scanning tunneling microscopy (STM) images of graphene sheets have revealed bright stripes along its edges, suggesting a high density of edge states near the Fermi level [17,18].”