Please use this identifier to cite or link to this item: https://physrep.ff.bg.ac.rs/handle/123456789/658
Title: Strain- and torsion-induced resonance energy tuning of Raman scattering in single-wall carbon nanotubes
Authors: Nikolić, Božidar 
Damnjanović, Milan 
Milošević, Ivanka 
Keywords: carbon nanotubes;Computational physics;group theory;homogeneous deformation;Raman excitation profile;symmetry
Issue Date: 1-Dec-2016
Journal: Physica Status Solidi (B) Basic Research
Abstract: 
Raman excitation profiles for homogeneously deformed single-walled carbon nanotubes are calculated and systematically analyzed. A number of attractive and apparent effects significant in designing electromechanical devices are caused by torsion and uniaxial strain. The shift of radial breathing mode (RBM) phonon energies due to deformation is negligible. The linear dependence of electronic transition energy shift on deformation is confirmed and it is found that the slope of it is strongly related to the chiral angle of the tube. It is also shown that for some tubes the transition energy shift covers the entire visible-light interval, making them perfectly tunable light absorbers. Two types of deformation are compared, a relaxed (slow) deformation and an adiabatic (fast) one. It is found that transition energies are more sensitive to adiabatic deformation, which can be useful for optomechanical device designing. Raman excitation profile of a (9,9) nanotube under torsion.
URI: https://physrep.ff.bg.ac.rs/handle/123456789/658
ISSN: 0370-1972
DOI: 10.1002/pssb.201600218
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