Heteroepitaxial system of h-BN/monolayer graphene on Ni(111)

T. Tanaka; A. Itoh; K. Yamashita; E. Rokuta; C. Oshima

doi:10.1142/S0218625X03005451

Heteroepitaxial system of h-BN/monolayer graphene on Ni(111)

T. Tanaka, A. Itoh, K. Yamashita, E. Rokuta, C. Oshima

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

15 Citations (Scopus)

Abstract

A heteroepitaxial system of h-BN/monolayer graphene on Ni(111) has been investigated by means of vibrational spectroscopy, accompanied by low energy electron diffraction (LEED) and Auger electron spectroscopy (AES). The system was prepared in an epitaxial manner on a Ni(111) surface by chemical vapor deposition (CVD). We found that phonon peaks in observed spectra showed typical features of Fuchs-Kliewer (FK) phonons. The vibrational spectra of h-BN films ranging in thickness from 0 to 8.7 monolayers have been compared with theoretical spectra based on a dielectric theory. Detailed analysis has revealed new types of phonons, of which the vibrational amplitudes are localized at edges of h-BN nanocrystals. In addition, we have observed subsidence phenomena of the graphene and h-BN layers into Ni substrate at elevated temperatures.

Original language	English
Pages (from-to)	697-703
Number of pages	7
Journal	Surface Review and Letters
Volume	10
Issue number	4
DOIs	https://doi.org/10.1142/S0218625X03005451
Publication status	Published - 2003 Aug

Keywords

Graphite
h-BN
HREELS
Nanocrystals

ASJC Scopus subject areas

Materials Science(all)
Surfaces and Interfaces
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electronic, Optical and Magnetic Materials

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10.1142/S0218625X03005451

Cite this

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abstract = "A heteroepitaxial system of h-BN/monolayer graphene on Ni(111) has been investigated by means of vibrational spectroscopy, accompanied by low energy electron diffraction (LEED) and Auger electron spectroscopy (AES). The system was prepared in an epitaxial manner on a Ni(111) surface by chemical vapor deposition (CVD). We found that phonon peaks in observed spectra showed typical features of Fuchs-Kliewer (FK) phonons. The vibrational spectra of h-BN films ranging in thickness from 0 to 8.7 monolayers have been compared with theoretical spectra based on a dielectric theory. Detailed analysis has revealed new types of phonons, of which the vibrational amplitudes are localized at edges of h-BN nanocrystals. In addition, we have observed subsidence phenomena of the graphene and h-BN layers into Ni substrate at elevated temperatures.",

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author = "T. Tanaka and A. Itoh and K. Yamashita and E. Rokuta and C. Oshima",

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T1 - Heteroepitaxial system of h-BN/monolayer graphene on Ni(111)

AU - Tanaka, T.

AU - Itoh, A.

AU - Yamashita, K.

AU - Rokuta, E.

AU - Oshima, C.

PY - 2003/8

Y1 - 2003/8

N2 - A heteroepitaxial system of h-BN/monolayer graphene on Ni(111) has been investigated by means of vibrational spectroscopy, accompanied by low energy electron diffraction (LEED) and Auger electron spectroscopy (AES). The system was prepared in an epitaxial manner on a Ni(111) surface by chemical vapor deposition (CVD). We found that phonon peaks in observed spectra showed typical features of Fuchs-Kliewer (FK) phonons. The vibrational spectra of h-BN films ranging in thickness from 0 to 8.7 monolayers have been compared with theoretical spectra based on a dielectric theory. Detailed analysis has revealed new types of phonons, of which the vibrational amplitudes are localized at edges of h-BN nanocrystals. In addition, we have observed subsidence phenomena of the graphene and h-BN layers into Ni substrate at elevated temperatures.

AB - A heteroepitaxial system of h-BN/monolayer graphene on Ni(111) has been investigated by means of vibrational spectroscopy, accompanied by low energy electron diffraction (LEED) and Auger electron spectroscopy (AES). The system was prepared in an epitaxial manner on a Ni(111) surface by chemical vapor deposition (CVD). We found that phonon peaks in observed spectra showed typical features of Fuchs-Kliewer (FK) phonons. The vibrational spectra of h-BN films ranging in thickness from 0 to 8.7 monolayers have been compared with theoretical spectra based on a dielectric theory. Detailed analysis has revealed new types of phonons, of which the vibrational amplitudes are localized at edges of h-BN nanocrystals. In addition, we have observed subsidence phenomena of the graphene and h-BN layers into Ni substrate at elevated temperatures.

KW - Graphite

KW - h-BN

KW - HREELS

KW - Nanocrystals

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JO - Surface Review and Letters

JF - Surface Review and Letters

IS - 4

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Heteroepitaxial system of h-BN/monolayer graphene on Ni(111)

Abstract

Keywords

ASJC Scopus subject areas

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