We investigate experimentally the transport properties of single-walled carbon nanotube bundles as a function of temperature and applied current over broad intervals of these variables. The analysis is performed on arrays of nanotube bundles whose axes are aligned along the direction of the externally supplied bias current. The data are found consistent with a charge transport model governed by the tunneling between metallic regions occurring through potential barriers generated by a nanotube's contact areas or bundle surfaces. Based on this model and on experimental data, we describe quantitatively the dependencies of the height of these barriers upon bias current and temperature.

Salvato, M., Cirillo, M., Lucci, M., Orlanducci, S., Ottaviani, I., TERRANOVA PERSICHELLI, M.l., et al. (2008). Charge transport and tunneling in single-walled carbon nanotube bundles. PHYSICAL REVIEW LETTERS, 101(24), 2468041-2468044 [10.1103/PhysRevLett.101.246804].

Charge transport and tunneling in single-walled carbon nanotube bundles

SALVATO, MATTEO;CIRILLO, MATTEO;LUCCI, MASSIMILIANO;ORLANDUCCI, SILVIA;OTTAVIANI, IVANO;TERRANOVA PERSICHELLI, MARIA LETIZIA;TOSCHI, FRANCESCO
2008-01-01

Abstract

We investigate experimentally the transport properties of single-walled carbon nanotube bundles as a function of temperature and applied current over broad intervals of these variables. The analysis is performed on arrays of nanotube bundles whose axes are aligned along the direction of the externally supplied bias current. The data are found consistent with a charge transport model governed by the tunneling between metallic regions occurring through potential barriers generated by a nanotube's contact areas or bundle surfaces. Based on this model and on experimental data, we describe quantitatively the dependencies of the height of these barriers upon bias current and temperature.
2008
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/03 - FISICA DELLA MATERIA
Settore FIS/01 - FISICA SPERIMENTALE
Settore CHIM/03 - CHIMICA GENERALE E INORGANICA
English
Con Impact Factor ISI
Mathematical models; Nanocomposites; Nanotubes; Single-walled carbon nanotubes (SWCN); Transport properties; Applied currents; Charge transport models; Charge transports; Contact areas; Experimental datums; Metallic regions; Nanotube bundles; Potential barriers; Single-walled carbon nanotube bundles; Carbon nanotubes
also selected for Virtual Journal of Nanoscale Science and Technology 22 December 2009
Salvato, M., Cirillo, M., Lucci, M., Orlanducci, S., Ottaviani, I., TERRANOVA PERSICHELLI, M.l., et al. (2008). Charge transport and tunneling in single-walled carbon nanotube bundles. PHYSICAL REVIEW LETTERS, 101(24), 2468041-2468044 [10.1103/PhysRevLett.101.246804].
Salvato, M; Cirillo, M; Lucci, M; Orlanducci, S; Ottaviani, I; TERRANOVA PERSICHELLI, Ml; Toschi, F
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/27547
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