Analysis of phonons in graphene sheets by means of HREELS measurement and ab initio calculation

H. Yanagisawa; T. Tanaka; Y. Ishida; M. Matsue; E. Rokuta; S. Otani; C. Oshima

doi:10.1002/sia.1948

Analysis of phonons in graphene sheets by means of HREELS measurement and ab initio calculation

H. Yanagisawa^*, T. Tanaka, Y. Ishida, M. Matsue, E. Rokuta, S. Otani, C. Oshima

^*Corresponding author for this work

Waseda University

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

92 Citations (Scopus)

Abstract

We have grown epitaxial thin sheets of graphene on BC₃/NbB ₂(0001) and measured phonon dispersion curves of the graphene sheets by means of high-resolution electron energy-loss spectroscopy (HREELS). The phonon dispersion curves have been calculated on the basis of ab initio calculations. The observed curves were in good agreement with theoretical curves. The quality of crystallinity of the graphene layers was high compared with the bulk graphite crystals. In this paper, we demonstrate that the combination of HREELS measurement and ab initio calculations is extremely effective for investigation of honeycomb-structured materials.

Original language	English
Pages (from-to)	133-136
Number of pages	4
Journal	Surface and Interface Analysis
Volume	37
Issue number	2
DOIs	https://doi.org/10.1002/sia.1948
Publication status	Published - 2005 Feb

Keywords

Ab initio calculation
Graphite
HREELS
Phonon

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Colloid and Surface Chemistry

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10.1002/sia.1948

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abstract = "We have grown epitaxial thin sheets of graphene on BC3/NbB 2(0001) and measured phonon dispersion curves of the graphene sheets by means of high-resolution electron energy-loss spectroscopy (HREELS). The phonon dispersion curves have been calculated on the basis of ab initio calculations. The observed curves were in good agreement with theoretical curves. The quality of crystallinity of the graphene layers was high compared with the bulk graphite crystals. In this paper, we demonstrate that the combination of HREELS measurement and ab initio calculations is extremely effective for investigation of honeycomb-structured materials.",

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T1 - Analysis of phonons in graphene sheets by means of HREELS measurement and ab initio calculation

AU - Yanagisawa, H.

AU - Tanaka, T.

AU - Ishida, Y.

AU - Matsue, M.

AU - Rokuta, E.

AU - Otani, S.

AU - Oshima, C.

PY - 2005/2

Y1 - 2005/2

N2 - We have grown epitaxial thin sheets of graphene on BC3/NbB 2(0001) and measured phonon dispersion curves of the graphene sheets by means of high-resolution electron energy-loss spectroscopy (HREELS). The phonon dispersion curves have been calculated on the basis of ab initio calculations. The observed curves were in good agreement with theoretical curves. The quality of crystallinity of the graphene layers was high compared with the bulk graphite crystals. In this paper, we demonstrate that the combination of HREELS measurement and ab initio calculations is extremely effective for investigation of honeycomb-structured materials.

AB - We have grown epitaxial thin sheets of graphene on BC3/NbB 2(0001) and measured phonon dispersion curves of the graphene sheets by means of high-resolution electron energy-loss spectroscopy (HREELS). The phonon dispersion curves have been calculated on the basis of ab initio calculations. The observed curves were in good agreement with theoretical curves. The quality of crystallinity of the graphene layers was high compared with the bulk graphite crystals. In this paper, we demonstrate that the combination of HREELS measurement and ab initio calculations is extremely effective for investigation of honeycomb-structured materials.

KW - Ab initio calculation

KW - Graphite

KW - HREELS

KW - Phonon

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JO - Surface and Interface Analysis

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Analysis of phonons in graphene sheets by means of HREELS measurement and ab initio calculation

Abstract

Keywords

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