Journal
APPLIED PHYSICS LETTERS
Volume 100, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3700967
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- EPSRC
- Newton Trust
- Royal Society
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We demonstrate single-electron pumping in a gate-defined carbon nanotube double quantum dot. By periodic modulation of the potentials of the two quantum dots, we move the system around charge triple points and transport exactly one electron or hole per cycle. We investigate the pumping as a function of the modulation frequency and amplitude and observe good current quantization up to frequencies of 18 MHz where rectification effects cause the mechanism to break down. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3700967]
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