Longitudinal Optical Phonons in Metallic and Semiconducting Carbon Nanotubes

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Details zur Publikation

Autor(en): Fouquet M, Telg H, Maultzsch J, Wu Y, Chandra B, Hone J, Heinz TF, Thomsen C
Zeitschrift: Physical Review Letters
Verlag: AMER PHYSICAL SOC
Jahr der Veröffentlichung: 2009
Band: 102
Heftnummer: 7
ISSN: 0031-9007


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.



FAU-Autoren / FAU-Herausgeber

Maultzsch, Janina Prof. Dr.
Lehrstuhl für Experimentalphysik


Autor(en) der externen Einrichtung(en)
Columbia University
Technische Universität Berlin


Zitierweisen

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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Zuletzt aktualisiert 2018-07-08 um 02:59