Abstract
Rectification of ac displacement currents generated by periodic variation of two independent gate voltages of a quantum dot can lead to a dc voltage linear in the frequency ω. The presence of this rectified displacement current could account for the magnetic field symmetry observed in a recent measurement on an adiabatic quantum electron pump by Switkes et al. [Science 283, 1905 (1999)].
- Received 14 December 2000
DOI:https://doi.org/10.1103/PhysRevB.63.121303
©2001 American Physical Society
