Phase breaking of coherent electron waves in dot array systems

Yuichi Ochiai, A. Wahju Widjaja, Nobuyuki Sasaki, Kazunuki Yamamoto, Jonathan P. Bird, Kohji Ishibashi, Yoshinobu Aoyagi, Takuo Sugano, David K. Ferry

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Low temperature magneto-conductance has been studied in ballistic dot arrays using corrugation splitgates. We have obseved many peaks at low fields superimposed upon the large negative magneto-resistance in double sided corrugation wires. These peaks can be considered to arise from three different phase breaking phenomena for coherent electron waves in ballistic quantum dots: weak localization in the quasi-ballistic regime, periodic oscillations due to coherent interferences and electron focusing of collimated electron waves. The three phenomena have been discussed in terms of their phase breaking behavior in dot arrays.

Original languageEnglish (US)
Pages (from-to)3971-3973
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume36
Issue number6 B
DOIs
StatePublished - Jan 1 1997

Keywords

  • Coherent interference
  • Collimated electron wave
  • Double-sided corrugation gate
  • GaAs/AlGaAs heterojunction
  • split-gated quantum wires

ASJC Scopus subject areas

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

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    Ochiai, Y., Widjaja, A. W., Sasaki, N., Yamamoto, K., Bird, J. P., Ishibashi, K., Aoyagi, Y., Sugano, T., & Ferry, D. K. (1997). Phase breaking of coherent electron waves in dot array systems. Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 36(6 B), 3971-3973. https://doi.org/10.1143/jjap.36.3971