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Unusual Raman dispersion for D and 2D lines in high-curvature single-walled carbon nanotubes revealed by C-13 isotope substitution

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Unusual Raman dispersion for D and 2D lines in high-curvature single-walled carbon nanotubes revealed by C-13 isotope substitution. / Simon, F.; Zolyomi, V.; Pfeiffer, R. et al.
In: Physical review B, Vol. 81, No. 12, 125434, 01.03.2010.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Simon F, Zolyomi V, Pfeiffer R, Kuzmany H, Koltai J, Kurti J. Unusual Raman dispersion for D and 2D lines in high-curvature single-walled carbon nanotubes revealed by C-13 isotope substitution. Physical review B. 2010 Mar 1;81(12):125434. doi: 10.1103/PhysRevB.81.125434

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@article{d6209408cd9a4d05a932c953b2aa4d8e,
title = "Unusual Raman dispersion for D and 2D lines in high-curvature single-walled carbon nanotubes revealed by C-13 isotope substitution",
abstract = "The defect-induced D line and its overtone are fundamental signatures in the Raman spectra of carbon nanomaterials. An analysis of these lines as a function of laser excitation energy is reported for double-walled carbon nanotubes where the inner tubes represent high-curvature nanotube species. From 13C substituted inner tubes it is demonstrated that the quasilinear relations between laser energy and line position (Raman dispersion) cross over unexpectedly for low-energy excitation for the inner and outer tube shells. The result is quantitatively explained by a curvature-induced phonon softening and first-principles calculations of the optical transition energies.",
author = "F. Simon and V. Zolyomi and R. Pfeiffer and H. Kuzmany and J. Koltai and J. Kurti",
note = "{\textcopyright} 2010 The American Physical Society",
year = "2010",
month = mar,
day = "1",
doi = "10.1103/PhysRevB.81.125434",
language = "English",
volume = "81",
journal = "Physical review B",
issn = "1098-0121",
publisher = "AMER PHYSICAL SOC",
number = "12",

}

RIS

TY - JOUR

T1 - Unusual Raman dispersion for D and 2D lines in high-curvature single-walled carbon nanotubes revealed by C-13 isotope substitution

AU - Simon, F.

AU - Zolyomi, V.

AU - Pfeiffer, R.

AU - Kuzmany, H.

AU - Koltai, J.

AU - Kurti, J.

N1 - © 2010 The American Physical Society

PY - 2010/3/1

Y1 - 2010/3/1

N2 - The defect-induced D line and its overtone are fundamental signatures in the Raman spectra of carbon nanomaterials. An analysis of these lines as a function of laser excitation energy is reported for double-walled carbon nanotubes where the inner tubes represent high-curvature nanotube species. From 13C substituted inner tubes it is demonstrated that the quasilinear relations between laser energy and line position (Raman dispersion) cross over unexpectedly for low-energy excitation for the inner and outer tube shells. The result is quantitatively explained by a curvature-induced phonon softening and first-principles calculations of the optical transition energies.

AB - The defect-induced D line and its overtone are fundamental signatures in the Raman spectra of carbon nanomaterials. An analysis of these lines as a function of laser excitation energy is reported for double-walled carbon nanotubes where the inner tubes represent high-curvature nanotube species. From 13C substituted inner tubes it is demonstrated that the quasilinear relations between laser energy and line position (Raman dispersion) cross over unexpectedly for low-energy excitation for the inner and outer tube shells. The result is quantitatively explained by a curvature-induced phonon softening and first-principles calculations of the optical transition energies.

U2 - 10.1103/PhysRevB.81.125434

DO - 10.1103/PhysRevB.81.125434

M3 - Journal article

VL - 81

JO - Physical review B

JF - Physical review B

SN - 1098-0121

IS - 12

M1 - 125434

ER -