Tight-binding normal mode analysis of suspended single-wall carbon nanotubes

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 pre...

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Veröffentlicht in:Europhysics letters 2016-02, Vol.113 (3), p.37004-37004
Hauptverfasser: Beu, T. A., Farca, A.
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/113/37004