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Quantum Transport Properties of Carbon Nanotubes in the Coulomb Blockade Regime

Published online by Cambridge University Press:  15 March 2011

H. Mehrez ,
Hong Guo ,
Jian Wang  and
Christopher Roland
H. Mehrez
Affiliation:
Department of Physics, McGill University, Montreal. PQ, H3A 2T8, Canada
Hong Guo
Affiliation:
Department of Physics, McGill University, Montreal. PQ, H3A 2T8, Canada
Jian Wang
Affiliation:
Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China
Christopher Roland
Affiliation:
Department of Physics, The North Carolina State University, Raleigh, NC 27695, USA
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Abstract

Recent experimental measurements on transport through carbon nanotubes in the Colomb Blockade regime showedm at zero bias and zero magnetic field, an alternation in the Coulomb peak heights as electrons are added to the nanotube. This surprsing peak-height alternation is shown to be related to the odd/even parity of the number of electrons in sider the nanotube. We invesitiaged this phenmenon theoretically with a new many-body apporach. and find that the anomalous behaviour may be attributed to the spin degenerate states. We alos show that asymmetric current saturation as a function of bias voltage polarity, also observed experimentally, is due to eigenstate relaxtions within the nanotube.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 633: Symposium A – Nanotubes and Related Materials , 2000 , A14.6
Copyright
Copyright © Materials Research Society 2001

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