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A new interpretation of the scanning tunneling microscope image of graphite

A new interpretation of the scanning tunneling microscope image of graphite

Zeinalipour-Yazdi, Constantinos D. ORCID: 0000-0002-8388-1549 and Pullman, David P. (2008) A new interpretation of the scanning tunneling microscope image of graphite. Chemical Physics, 348 (1-3). pp. 233-236. ISSN 0301-0104 (doi:https://doi.org/10.1016/j.chemphys.2008.03.019)

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Abstract

In this work, highly-resolved scanning tunneling microscopy images of graphite basal plane are obtained and theoretical computations are performed to explain the resolution of only half the atoms in STM images of graphite. Our experimental and computational findings indicate that the bright elliptical spots observed in trigonal STM images of graphite may not correspond to carbon positions but to π-states localized above alternate carbon–carbon bonds. This interpretation is based on STM experiments that suggest that the elliptical shape of the bright spots may not be a tip artifact and on simulated STM images of a graphite using orthorhombic unit cells that are in excellent agreement with experimentally obtained images.

Item Type: Article
Uncontrolled Keywords: STM, graphite, HOPG, simulations
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Pharmaceutical, Chemical & Environmental Sciences
Last Modified: 06 Oct 2018 22:09
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/21456

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