Quantum transport in single and multiple quantum dots

David K. Ferry, Jonathan P. Bird, Richard Akis, David P. Pivin, Kevin M. Connolly, Koji Ishibashi, Yoshinobu Aoyagi, Takuo Sugano, Yuichi Ochiai

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Ballistic quantum dots have been used in a wide variety of studies ranging from single-electron charging to chaotic systems. However, in open, ballistic quantum dots, the behavior is significantly different. Here, we discuss (1) the observation of regular, periodic fluctuations arising from the existence of stable orbits, (2) the regular and chaotic behavior of coupled dots, and (3) the theory of such dots. The regular orbit properties of these dots are their most stable, generic property, and are clearly reflected in the magnetoresistance. These give rise to periodic fluctuations, which are the result of a very few, periodic orbits within the dot that give rise to scarred wave functions and harmonically related frequencies in the Fourier spectrum. The orbits arise from the role of regular trajectories in the oscillatory density of states and the crucial collimation effects of the quantum point contacts.

Original languageEnglish (US)
Pages (from-to)3944-3950
Number of pages7
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume36
Issue number6 SUPPL. B
StatePublished - Jun 1997

Fingerprint

Semiconductor quantum dots
Orbits
quantum dots
orbits
Ballistics
ballistics
Chaotic systems
Point contacts
collimation
Magnetoresistance
Wave functions
charging
Trajectories
trajectories
wave functions
Electrons
electrons

Keywords

  • Device modeling
  • Device physics
  • Inhomogeneities
  • Quantum dots
  • Quantum transport
  • Random impurities

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Ferry, D. K., Bird, J. P., Akis, R., Pivin, D. P., Connolly, K. M., Ishibashi, K., ... Ochiai, Y. (1997). Quantum transport in single and multiple quantum dots. Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 36(6 SUPPL. B), 3944-3950.

Quantum transport in single and multiple quantum dots. / Ferry, David K.; Bird, Jonathan P.; Akis, Richard; Pivin, David P.; Connolly, Kevin M.; Ishibashi, Koji; Aoyagi, Yoshinobu; Sugano, Takuo; Ochiai, Yuichi.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 36, No. 6 SUPPL. B, 06.1997, p. 3944-3950.

Research output: Contribution to journalArticle

Ferry, DK, Bird, JP, Akis, R, Pivin, DP, Connolly, KM, Ishibashi, K, Aoyagi, Y, Sugano, T & Ochiai, Y 1997, 'Quantum transport in single and multiple quantum dots', Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, vol. 36, no. 6 SUPPL. B, pp. 3944-3950.
Ferry DK, Bird JP, Akis R, Pivin DP, Connolly KM, Ishibashi K et al. Quantum transport in single and multiple quantum dots. Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 1997 Jun;36(6 SUPPL. B):3944-3950.
Ferry, David K. ; Bird, Jonathan P. ; Akis, Richard ; Pivin, David P. ; Connolly, Kevin M. ; Ishibashi, Koji ; Aoyagi, Yoshinobu ; Sugano, Takuo ; Ochiai, Yuichi. / Quantum transport in single and multiple quantum dots. In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 1997 ; Vol. 36, No. 6 SUPPL. B. pp. 3944-3950.
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