Current response of quantum dot modulated by time-dependent external fields

Susumu Adachi, Kazuya Fujimoto, Tsuyoshi Hatano, Yoshimasa Asawa

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We study how the dc transport through a semiconductor quantum dot varies when time-dependent external fields are applied. We find (i) the shift of the Coulomb blockade region due to the interband excitation, (ii) the resonant peak structures of the Coulomb oscillation due to the intraband excitation, and (iii) the electron pumping effect in the quantum dot modulated by the microwave field with frequency lower than the level spacing of the quantum dot.

Original languageEnglish
Pages (from-to)4298-4301
Number of pages4
JournalJapanese journal of applied physics
Volume34
Issue number8
DOIs
Publication statusPublished - 1995 Aug

Keywords

  • Current continuity
  • Electron pumping
  • Interband excitation
  • Intraband excitation
  • Low-frequency modulation
  • Quantum dot
  • Shift of Coulomb blockade

ASJC Scopus subject areas

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

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