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Constructive role of non-adiabaticity for quantized charge pumping

  • B. Kaestner*
  • , C. Leicht
  • , P. Mirovsky
  • , V. Kashcheyevs
  • , E. V. Kurganova
  • , U. Zeitler
  • , K. Pierz
  • , H. W. Schumacher
  • *Corresponding author for this work
  • Physikalisch-Technische Bundesanstalt
  • Radboud University Nijmegen

Research output: Chapter in Book/Report/Conference proceedingConference paperResearchpeer-review

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.

Original languageEnglish
Title of host publicationPhysics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30
Pages345-346
Number of pages2
DOIs
Publication statusPublished - 2011
Event30th International Conference on the Physics of Semiconductors, ICPS-30 - Seoul, Korea, Republic of
Duration: 25 Jul 201030 Jul 2010

Publication series

NameAIP Conference Proceedings
Volume1399
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference30th International Conference on the Physics of Semiconductors, ICPS-30
Country/TerritoryKorea, Republic of
CitySeoul
Period25/07/1030/07/10

Keywords

  • single electrons pumps

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