| Issue |
EPL
Volume 113, Number 3, February 2016
|
|
|---|---|---|
| Article Number | 37004 | |
| Number of page(s) | 6 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/113/37004 | |
| Published online | 25 February 2016 | |
Tight-binding normal mode analysis of suspended single-wall carbon nanotubes
University “Babeş-Bolyai”, Faculty of Physics, Department of Biomolecular Physics - 400084 Cluj-Napoca, Romania
Received: 3 December 2015
Accepted: 13 February 2016
We present a detailed normal mode analysis of suspended single-wall carbon nanotubes based on a non-orthogonal tight-binding formalism and a new methodology for classifying vibrational modes, using geometry-adapted merit functions. The fundamental modes are in good agreement with experiments and previous calculations. The analysis of the high-order vibrations evidences interesting non-classical features, while the sensitivity of the normal modes to the nanotube geometry provides new insights useful for practical realizations of mass resonators.
PACS: 71.15.Nc – Total energy and cohesive energy calculations / 78.20.Bh – Theory, models, and numerical simulation / 78.30.Na – Fullerenes and related materials
© EPLA, 2016
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