Double-resonant Raman scattering with optical and acoustic phonons in carbon nanotubes

Journal article


Publication Details

Author(s): Tyborski C, Vierck A, Narula R, Popov VN, Maultzsch J
Journal: Physical Review B
Publisher: AMER PHYSICAL SOC
Publication year: 2018
Volume: 97
Journal issue: 21
ISSN: 2469-9950
Language: English


Abstract

We analyze and assign two low-intensity, double-resonant Raman bands at around 1950 cm(-1) and 2450 cm(-1) in carbon nanotube ensembles. We present Raman spectra of a high-pressure carbon monoxide sample for laser energies in the visible range. By using density functional theory plus zone folding, we simulate both combination modes for various excitation energies with respect to the chiral-index distribution of carbon nanotubes in the sample. For a comparison, double-resonant Raman spectra of single carbon nanotubes are also modeled within a symmetry-based nonorthogonal tight-binding approach, resulting in a different assignment of the 1950-cm(-1) band. Apparent discrepancies in the assignments are discussed in the article.


FAU Authors / FAU Editors

Maultzsch, Janina Prof. Dr.
Lehrstuhl für Experimentalphysik


External institutions with authors

Indian Institute of Technology (IIT), Delhi
Sofia University "St. Kliment Ohridski" / Софийски университет "Св. Климент Охридски"
Technische Universität Berlin


How to cite

APA:
Tyborski, C., Vierck, A., Narula, R., Popov, V.N., & Maultzsch, J. (2018). Double-resonant Raman scattering with optical and acoustic phonons in carbon nanotubes. Physical Review B, 97(21). https://dx.doi.org/10.1103/PhysRevB.97.214306

MLA:
Tyborski, Christoph, et al. "Double-resonant Raman scattering with optical and acoustic phonons in carbon nanotubes." Physical Review B 97.21 (2018).

BibTeX: 

Last updated on 2019-18-03 at 10:03