Enhanced current quantization in high frequency electron pumps in a perpendicular magnetic field
Mesoscale and Nanoscale Physics
2009-01-01 v2
Abstract
We present experimental results of high frequency quantized charge pumping through a quantum dot formed by the electric field arising from applied voltages in a GaAs/AlGaAs system in the presence of a perpendicular magnetic field B. Clear changes are observed in the quantized current plateaus as a function of applied magnetic field. We report on the robustness in the length of the quantized plateaus and improvements in the quantization as a result of the applied B field.
Cite
@article{arxiv.0811.0494,
title = {Enhanced current quantization in high frequency electron pumps in a perpendicular magnetic field},
author = {S. J. Wright and M. D. Blumenthal and Godfrey Gumbs and A. L. Thorn and M. Pepper and T. J. B. M. Janssen and S. N. Holmes and D. Anderson and G. A. C. Jones and C. A. Nicoll and D. A. Ritchie},
journal= {arXiv preprint arXiv:0811.0494},
year = {2009}
}
Comments
4 pages, 4 figures, accepted for publication in Phys. Rev. B