Longitudinal Optical Phonons in Metallic and Semiconducting Carbon Nanotubes

Fouquet M, Telg H, Maultzsch J, Wu Y, Chandra B, Hone J, Heinz TF, Thomsen C (2009)

Publication Status: Published

Publication Type: Journal article

Publication year: 2009

Journal

Physical Review Letters American Physical Society

Publisher: AMER PHYSICAL SOC

Book Volume: 102

Journal Issue: 7

DOI: 10.1103/PhysRevLett.102.075501

Abstract

We analyze the high-energy Raman modes, G(+) and G(-), in a pair of one metallic and one semiconducting nanotubes. By combining Rayleigh scattering with Raman resonance profiles of the radial breathing mode and the high-energy modes, we show that the observed G(-) and G(+) peaks can originate from longitudinal optical phonons of different tubes. The G(-) peak is the longitudinal mode of the metallic tube; it is broadened and downshifted due to strong electron-phonon coupling in the metallic nanotube. The G(+) peak is due to the longitudinal mode in the semiconducting tube. This result resolves an ongoing debate in the literature.

Authors with CRIS profile

Janina Maultzsch Lehrstuhl für Experimentalphysik

Involved external institutions

Technische Universität Berlin DE Germany (DE) Columbia University US United States (USA) (US)

How to cite

APA:

Fouquet, M., Telg, H., Maultzsch, J., Wu, Y., Chandra, B., Hone, J.,... Thomsen, C. (2009). Longitudinal Optical Phonons in Metallic and Semiconducting Carbon Nanotubes. Physical Review Letters, 102(7). https://dx.doi.org/10.1103/PhysRevLett.102.075501

MLA:

Fouquet, Martin, et al. "Longitudinal Optical Phonons in Metallic and Semiconducting Carbon Nanotubes." Physical Review Letters 102.7 (2009).

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