Raman study of metallic carbon nanotubes at elevated pressure

D. Christofilos; J. Arvanitidis; C. Tzampazis; K. Papagelis; T. Takenobu; Y. Iwasa; H. Kataura; C. Lioutas; S. Ves; G. A. Kourouklis

doi:10.1016/j.diamond.2005.11.027

Raman study of metallic carbon nanotubes at elevated pressure

D. Christofilos^*, J. Arvanitidis, C. Tzampazis, K. Papagelis, T. Takenobu, Y. Iwasa, H. Kataura, C. Lioutas, S. Ves, G. A. Kourouklis

^*Corresponding author for this work

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

19 Citations (Scopus)

Abstract

Raman spectroscopy has been employed in the study of the high pressure response of metallic single-(SWCNTs) and double-wall carbon nanotubes (DWCNTs). Besides a variety of pressure induced changes, such as the deformation of SWCNTs and the DWCNT outer tubes, as well as the quasi-isolation of the inner tubes, a narrowing of the characteristic Breit-Wigner-Fano Raman peak is also observed. As the width and asymmetry of this peak reflects the coupling of the vibrational mode to an electronic continuum, its pressure induced narrowing can be ascribed to a decoupling process, possibly connected to the enhanced tube-tube interaction and the deformation of the tubes at elevated pressures.

Original language	English
Pages (from-to)	1075-1079
Number of pages	5
Journal	Diamond and Related Materials
Volume	15
Issue number	4-8
DOIs	https://doi.org/10.1016/j.diamond.2005.11.027
Publication status	Published - 2006 Apr
Externally published	Yes

Keywords

nanotechnology
nanotubes
optical properties
phonons

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Materials Chemistry
Surfaces, Coatings and Films
Surfaces and Interfaces

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10.1016/j.diamond.2005.11.027

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abstract = "Raman spectroscopy has been employed in the study of the high pressure response of metallic single-(SWCNTs) and double-wall carbon nanotubes (DWCNTs). Besides a variety of pressure induced changes, such as the deformation of SWCNTs and the DWCNT outer tubes, as well as the quasi-isolation of the inner tubes, a narrowing of the characteristic Breit-Wigner-Fano Raman peak is also observed. As the width and asymmetry of this peak reflects the coupling of the vibrational mode to an electronic continuum, its pressure induced narrowing can be ascribed to a decoupling process, possibly connected to the enhanced tube-tube interaction and the deformation of the tubes at elevated pressures.",

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AU - Christofilos, D.

AU - Arvanitidis, J.

AU - Tzampazis, C.

AU - Papagelis, K.

AU - Takenobu, T.

AU - Iwasa, Y.

AU - Kataura, H.

AU - Lioutas, C.

AU - Ves, S.

AU - Kourouklis, G. A.

PY - 2006/4

Y1 - 2006/4

N2 - Raman spectroscopy has been employed in the study of the high pressure response of metallic single-(SWCNTs) and double-wall carbon nanotubes (DWCNTs). Besides a variety of pressure induced changes, such as the deformation of SWCNTs and the DWCNT outer tubes, as well as the quasi-isolation of the inner tubes, a narrowing of the characteristic Breit-Wigner-Fano Raman peak is also observed. As the width and asymmetry of this peak reflects the coupling of the vibrational mode to an electronic continuum, its pressure induced narrowing can be ascribed to a decoupling process, possibly connected to the enhanced tube-tube interaction and the deformation of the tubes at elevated pressures.

AB - Raman spectroscopy has been employed in the study of the high pressure response of metallic single-(SWCNTs) and double-wall carbon nanotubes (DWCNTs). Besides a variety of pressure induced changes, such as the deformation of SWCNTs and the DWCNT outer tubes, as well as the quasi-isolation of the inner tubes, a narrowing of the characteristic Breit-Wigner-Fano Raman peak is also observed. As the width and asymmetry of this peak reflects the coupling of the vibrational mode to an electronic continuum, its pressure induced narrowing can be ascribed to a decoupling process, possibly connected to the enhanced tube-tube interaction and the deformation of the tubes at elevated pressures.

KW - nanotechnology

KW - nanotubes

KW - optical properties

KW - phonons

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ER -

Raman study of metallic carbon nanotubes at elevated pressure

Abstract

Keywords

ASJC Scopus subject areas

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