Landau-level depopulation and high-field magneto-resistance of open quantum dots

R. Akis, A. Ramamoorthy, J. P. Bird, T. Maemoto, D. K. Ferry, M. Inoue

Research output: Contribution to journalConference article

Abstract

We discuss the origin of the Shubnikov-de Haas oscillations (SdHO) that are observed in the magneto-resistance of strongly open quantum dots at magnetic fields where the Lorentz force on the electrons allows them to undergo cyclotron motion within the quantum dot. Similar to the discussion of this effect in two-dimensional electron systems, we find that the properties of the SdHOs in the dots are strongly affected by the presence of disorder, which serves to provide coupling between bulk- and edge-like dot eigenstates. As an example of this behavior, we present the results of studies of the SdHO in InAs open quantum dots.

Original languageEnglish (US)
Pages (from-to)197-201
Number of pages5
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume19
Issue number1-2
DOIs
StatePublished - Jul 1 2003
EventFourth International Symposium on Nanostructures and Mesoscopi - Tempe, AZ, United States
Duration: Feb 17 2003Feb 21 2003

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Keywords

  • Device Modeling
  • Disorder
  • Landau-level
  • Quantum dot
  • Quantum transport

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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