Please use this identifier to cite or link to this item: https://physrep.ff.bg.ac.rs/handle/123456789/296
Title: Commensurate double-walled carbon nanotubes: Symmetry and phonons
Authors: Damnjanović, M. 
Milošević, Ivanka 
Dobardžić, Edib
Vuković, Tatjana 
Nikolić, Božidar 
Issue Date: 1-Jan-2004
Journal: Physical Review B - Condensed Matter and Materials Physics
Abstract: 
For periodic double-walled carbon nanotubes stable configurations and full symmetry groups are found. Using this, the phonon dispersions and displacement eigenvectors are calculated and assigned by the complete set of conserved quantum numbers. The calculated infrared and Raman active modes match the measured values nicely. The approximate analytical frequency-diameter dependence for the breathing like, high energy, and rigid layer modes is derived within the perturbative model (justified by the weak interlayer interaction). The high energy modes are scarcely influenced by the interlayer interaction. The low temperature specific heat is below that of the ingredient (single-walled) layers, while the sound velocities fall close.
URI: https://physrep.ff.bg.ac.rs/handle/123456789/296
ISSN: 0163-1829
DOI: 10.1103/PhysRevB.69.153401
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