Adiabatic charge pumping in carbon nanotube quantum dots.

Journal article

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.

Authors: Buitelaar, MR; Kashcheyevs, V; Leek, P; Talyanskii, V; Smith, C

• Publication status: Published
• Journal: Physical Review Letters
• Volume: 101
• Issue: 12
• Pages: 126803
• Publication date: 2008-09-01
• DOI: 10.1103/physrevlett.101.126803
• EISSN: 1079-7114
• ISSN: 0031-9007
• Language: English