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Unconventional magnetotransport phenomena in individual carbon nanotubes

Lassagne, Benjamin and Raquet, Bertrand and Broto, Jean-Marc and Triozon, François and Roche, Stephan and Flahaut, Emmanuel and Ondarçuhu, Thierry and Vieu, Christophe and Gonzalez, Jesus Unconventional magnetotransport phenomena in individual carbon nanotubes. (2006) In: 12th International Conference on Narrow Gap Semiconductors (NGS 12), 3- 7 Juil 2005, Toulouse, France .

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Abstract

We investigate the quantum transport in different individual carbon nanotubes in the light of magneto-transport experiments in intense (60T pulsed)magnetic field. Large magnetic fields are required to probe field dependent gap modulation and quantum interference effects along the circumference of the tube. Such experiments along with a control of the electrostatic doping of the tube by a back-gate voltage constitute an unique tool to explore the exceptional electronic properties of this material. We bring evidence that the field dependence of the conductivity is a fingerprint of the electronic conduction modes and their interplay with the band structure (helicity), the static disorder and the location of the Fermi level of the tube. We infer the characteristic lengths of the electronic transport (the electronic mean free path and the phase coherence length) which are differently modified by the Fermi level location, depending on the disorder.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Proceeding 12th International Conference on Narrow Gap Semiconductors (NGS 12) published by Taylor & Francis in this book : Narrow Gap Semiconductors: Proceedings of the 12th International Conference on Narrow Gap Semiconductors, Toulouse, France, 3-7 July 2005 ISBN : 978-0750310161
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA
French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Other partners > Universidad de Los Andes (VENEZUELA)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Université de Toulouse > Université de Toulouse II-Le Mirail - UTM
Université de Toulouse > Université de Toulouse I-Sciences Sociales - UT1
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Deposited By: Cedric ARNAL
Deposited On:22 Jun 2011 09:21

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