Kohn anomaly in Raman spectroscopy of single wall carbon nanotubes

Ken Ichi Sasaki; Hootan Farhat; Riichiro Saito; Mildred S. Dresselhaus

doi:10.1016/j.physe.2010.03.007

Kohn anomaly in Raman spectroscopy of single wall carbon nanotubes

Ken Ichi Sasaki, Hootan Farhat, Riichiro Saito, Mildred S. Dresselhaus

SCI - Physics

Research output: Contribution to journal › Review article › peer-review

28 Citations (Scopus)

Abstract

Phonon softening phenomena of the Γ point optical modes including the longitudinal optical mode, transverse optical mode and radial breathing mode in "metallic" single wall carbon nanotubes are reviewed from a theoretical point of view. The effect of the curvature-induced mini-energy gap on the phonon softening which depends on the Fermi energy and chirality of the nanotube is the main subject of this article. We adopt an effective-mass model with a deformation-induced gauge field which provides us with a unified way to discuss the curvature effect and the electronphonon interaction.

Original language	English
Pages (from-to)	2005-2015
Number of pages	11
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	42
Issue number	8
DOIs	https://doi.org/10.1016/j.physe.2010.03.007
Publication status	Published - 2010 Jun

Keywords

Carbon nanotube
Curvature effect
Energy gap
Fermi energy
Graphene
Phonon self-energy
Raman G band

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

Access to Document

10.1016/j.physe.2010.03.007

Cite this

@article{c91d5b21b7b34ab09c61ceaf9e83a712,

title = "Kohn anomaly in Raman spectroscopy of single wall carbon nanotubes",

abstract = "Phonon softening phenomena of the Γ point optical modes including the longitudinal optical mode, transverse optical mode and radial breathing mode in {"}metallic{"} single wall carbon nanotubes are reviewed from a theoretical point of view. The effect of the curvature-induced mini-energy gap on the phonon softening which depends on the Fermi energy and chirality of the nanotube is the main subject of this article. We adopt an effective-mass model with a deformation-induced gauge field which provides us with a unified way to discuss the curvature effect and the electronphonon interaction.",

keywords = "Carbon nanotube, Curvature effect, Energy gap, Fermi energy, Graphene, Phonon self-energy, Raman G band",

author = "Sasaki, {Ken Ichi} and Hootan Farhat and Riichiro Saito and Dresselhaus, {Mildred S.}",

note = "Funding Information: K.S. acknowledges a Grant-in-Aid for Specially Promoted Research (no. 20001006) from MEXT. R.S acknowledges a MEXT Grant (no. 20241023). M.S.D acknowledges Grant NSF/DMR 07-04197.",

year = "2010",

month = jun,

doi = "10.1016/j.physe.2010.03.007",

language = "English",

volume = "42",

pages = "2005--2015",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

issn = "1386-9477",

publisher = "Elsevier",

number = "8",

}

TY - JOUR

T1 - Kohn anomaly in Raman spectroscopy of single wall carbon nanotubes

AU - Sasaki, Ken Ichi

AU - Farhat, Hootan

AU - Saito, Riichiro

AU - Dresselhaus, Mildred S.

N1 - Funding Information: K.S. acknowledges a Grant-in-Aid for Specially Promoted Research (no. 20001006) from MEXT. R.S acknowledges a MEXT Grant (no. 20241023). M.S.D acknowledges Grant NSF/DMR 07-04197.

PY - 2010/6

Y1 - 2010/6

N2 - Phonon softening phenomena of the Γ point optical modes including the longitudinal optical mode, transverse optical mode and radial breathing mode in "metallic" single wall carbon nanotubes are reviewed from a theoretical point of view. The effect of the curvature-induced mini-energy gap on the phonon softening which depends on the Fermi energy and chirality of the nanotube is the main subject of this article. We adopt an effective-mass model with a deformation-induced gauge field which provides us with a unified way to discuss the curvature effect and the electronphonon interaction.

AB - Phonon softening phenomena of the Γ point optical modes including the longitudinal optical mode, transverse optical mode and radial breathing mode in "metallic" single wall carbon nanotubes are reviewed from a theoretical point of view. The effect of the curvature-induced mini-energy gap on the phonon softening which depends on the Fermi energy and chirality of the nanotube is the main subject of this article. We adopt an effective-mass model with a deformation-induced gauge field which provides us with a unified way to discuss the curvature effect and the electronphonon interaction.

KW - Carbon nanotube

KW - Curvature effect

KW - Energy gap

KW - Fermi energy

KW - Graphene

KW - Phonon self-energy

KW - Raman G band

UR - http://www.scopus.com/inward/record.url?scp=77955306869&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955306869&partnerID=8YFLogxK

U2 - 10.1016/j.physe.2010.03.007

DO - 10.1016/j.physe.2010.03.007

M3 - Review article

AN - SCOPUS:77955306869

VL - 42

SP - 2005

EP - 2015

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

SN - 1386-9477

IS - 8

ER -

Kohn anomaly in Raman spectroscopy of single wall carbon nanotubes

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this