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Adiabatic charge pumping in carbon nanotube quantum dots.

Buitelaar, MR; Kashcheyevs, V; Leek, PJ; Talyanskii, VI; Smith, CG; Anderson, D; Jones, GA; ... Cobden, DH; + view all (2008) Adiabatic charge pumping in carbon nanotube quantum dots. Phys Rev Lett , 101 (12) , Article 126803. 10.1103/PhysRevLett.101.126803. Green open access


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We investigate charge pumping in carbon nanotube quantum dots driven by the electric field of a surface acoustic wave. We find that, at small driving amplitudes, the pumped current reverses polarity as the conductance is tuned through a Coulomb blockade peak using a gate electrode. We study the behavior as a function of wave amplitude, frequency, and direction and develop a model in which our results can be understood as resulting from adiabatic charge redistribution between the leads and quantum dots on the nanotube.

Type: Article
Title: Adiabatic charge pumping in carbon nanotube quantum dots.
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.101.126803
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.101.126803
Language: English
Additional information: © 2008 The American Physical Society
URI: http://discovery.ucl.ac.uk/id/eprint/1366978
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