M. Koltonyuk, D. Berman, N. B. Zhitenev, R. C. Ashoori, N. Pfeiffer, K. W. West
Published 1998-05-29, updated 1998-06-12Version 2
We have incorporated an aluminum single electron transistor (SET) directly on top of a vertical quantum dot, enabling the use of the SET as an electrometer that is extremely responsive to the motion of charge into and out of the dot. Charge induced on the SET central island from single electron additions to the dot modulates the SET output, and we describe two methods for demodulation that permit quantitative extraction of the quantum dot capacitance signal. The two methods produce closely similar results for the determined single electron capacitance peaks.
Comments: Submitted to Applied Physics Letters (reformatted to fit correctly on a page)
Sequential magnetotunneling in a vertical Quantum Dot tuned at the crossing to higher spin states
Non-equilibrium transport through a vertical quantum dot in the absence of spin-flip energy relaxation
Observation of Quantum Fluctuations of Charge on a Quantum Dot
