Constructive role of non-adiabaticity for quantized charge pumping
Mesoscale and Nanoscale Physics
2012-01-10 v1
Abstract
We investigate a recently developed scheme for quantized charge pumping based on single-parameter modulation. The device was realized in an AlGaAl-GaAs gated nanowire. It has been shown theoretically that non-adiabaticity is fundamentally required to realize single-parameter pumping, while in previous multi-parameter pumping schemes it caused unwanted and less controllable currents. In this paper we demonstrate experimentally the constructive and destructive role of non-adiabaticity by analysing the pumping current over a broad frequency range.
Cite
@article{arxiv.1007.2062,
title = {Constructive role of non-adiabaticity for quantized charge pumping},
author = {B. Kaestner and C. Leicht and P. Mirovsky and V. Kashcheyevs and E. V. Kurganova and U. Zeitler and K. Pierz and H. W. Schumacher},
journal= {arXiv preprint arXiv:1007.2062},
year = {2012}
}
Comments
Presented at ICPS 2010, July 25 - 30, Seoul, Korea