Effect of structure on transport characteristics of ballistic one-dimensional channel

Yoshiro Hirayama, Tadashi Saku, Yoshiji Horikoshi

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Ballistic one-dimensional (1-D) channels are fabricated by focused Ga ion beam scanning ontwo different modulation-doped wafers. Higher electron density causes a smaller transition region length between the 1-d channel and two-dimensional (2-D) ohmic regions. A ballistic 1-D channel witha smaller transition region shows conductance oscillation in addition to quantized step structures.This oscillation is explained by the interference of electron waves reflected at both ends of the 1-D channel. On the other hand, a ballistic channel with a larger transition region shows quantized step structures without conductance oscillation.

Original languageEnglish
Pages (from-to)L701-L703
JournalJapanese journal of applied physics
Volume28
Issue number4 A
DOIs
Publication statusPublished - 1989 Apr
Externally publishedYes

Keywords

  • Ballistic transport
  • Depletion width
  • Focused ion beam
  • One-dimensional channel
  • Quantum point contact

ASJC Scopus subject areas

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

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