Charge sensing in carbon nanotube quantum dots on microsecond timescales

Details Charge sensing in carbon nanotube quantum dots on microsecond timescales Charge sensing in carbon nanotube quantum dots on microsecond timescales

2005-10-20

arxiv.org/abs/cond-mat/0510550v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.73.201402

We report fast, simultaneous charge sensing and transport measurements of gate-defined carbon nanotube quantum dots. Aluminum radio frequency single electron transistors (rf-SETs) capacitively coupled to the nanotube dot provide single-electron charge sensing on microsecond timescales. Simultaneously, rf reflectometry allows fast measurement of transport through the nanotube dot. Charge stability diagrams for the nanotube dot in the Coulomb blockade regime show extended Coulomb diamonds into the high-bias regime, as well as even-odd filling effects, revealed in charge sensing data.

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