Maultzsch J (2003)
Publication Status: Published
Publication Type: Journal article
Publication year: 2003
Publisher: AMER PHYSICAL SOC
Book Volume: 91
Article Number: ARTN 087402
Journal Issue: 8
DOI: 10.1103/PhysRevLett.91.087402
We present excitation-energy dependent Raman measurements between 2.05 and 2.41 eV on the same individual carbon nanotube. We find a change in the Raman frequencies of both the D mode (63 cm(-1)/eV) and the high-energy modes. The observed frequencies of the modes at approximate to1600 cm(-1) as a function of laser-energy map the phonon dispersion relation of a metallic tube near the Gamma point of the Brillouin zone. Our results prove the entire first-order Raman spectrum in single-wall carbon nanotubes to originate from double-resonant scattering. Moreover, we confirm experimentally the phonon softening in metallic tubes by a Peierls-like mechanism.
APA:
Maultzsch, J. (2003). High-energy phonon branches of an individual metallic carbon nanotube. Physical Review Letters, 91(8). https://dx.doi.org/10.1103/PhysRevLett.91.087402
MLA:
Maultzsch, Janina. "High-energy phonon branches of an individual metallic carbon nanotube." Physical Review Letters 91.8 (2003).
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