Theoretical study of the time-dependent phenomenon of photon-assisted tunneling through a charged quantum dot

Masakazu Muraguchi, Kenji Shiraishi, Takuma Okunishi, Kyozaburo Takeda

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We have studied numerically the time-dependent photon-assisted tunneling (TD-PAT) process for electrons confined in quantum dots (QDs) by employing the finite difference method under the scheme of the TD-density functional theory (DFT). We have found the quasi-dark state (quasi-DS), where the injected electron remains in the QD. By varying the barrier thickness, we have calculated the TD profile of the electron density in a QD, and found the optimal geometry of the lozenge QD. We have also discussed how the charged QD modulates the PAT process.

Original languageEnglish
Article number064230
JournalJournal of Physics Condensed Matter
Volume21
Issue number6
DOIs
Publication statusPublished - 2009 Apr 9

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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