Probing the Discrete Level Spectrum of Open Quantum Dots

Jonathan P. Bird, Richard Akis, David K. Ferry, John Cooper, Yoshinobu Aoyagi, Takuo Sugano

Research output: Contribution to journalConference article

3 Scopus citations

Abstract

Low temperature measurements of open quantum dots exhibit a series of periodic oscillations in their conductance as a function of gate voltage at zero magnetic field. Realistic numerical simulations of the devices confirm the basic observations of experiment and reveal the existence of periodically recurring wavefunction scars. The simple periodicity of the conductance oscillations and the strong scarring of the wavefunction in the dot suggest that the intrinsic transport properties of these devices are dominated by the selective excitation of a small number of dot states, even in the absence of an applied magnetic field.

Original languageEnglish (US)
Pages (from-to)322-324
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume38
Issue number1 B
DOIs
StatePublished - 1999
EventProceedings of the 1998 International Symposium on Formation, Physics and Device Application of Quantum Dot Structures, QDS-98 - Sapporo, Japan
Duration: May 31 1998Jun 4 1998

Keywords

  • Magneto-transport
  • Quantum chaos
  • Quantum dots
  • Quantum transport
  • Wavefunction scarring

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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