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

Tyborski C, Vierck A, Narula R, Popov VN, Maultzsch J (2018)

Publication Language: English

Publication Status: Published

Publication Type: Journal article

Publication year: 2018

Journal

Physical Review B American Physical Society

Publisher: AMER PHYSICAL SOC

Book Volume: 97

Journal Issue: 21

DOI: 10.1103/PhysRevB.97.214306

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.

Authors with CRIS profile

Janina Maultzsch Lehrstuhl für Experimentalphysik

Involved external institutions

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

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://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).

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