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

    Fingerprint

    Semiconductor quantum dots
    Photons
    quantum dots
    photons
    Electrons
    Finite difference method
    Density functional theory
    Carrier concentration
    electrons
    density functional theory
    Geometry
    profiles
    geometry

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Materials Science(all)

    Cite this

    Theoretical study of the time-dependent phenomenon of photon-assisted tunneling through a charged quantum dot. / Muraguchi, Masakazu; Shiraishi, Kenji; Okunishi, Takuma; Takeda, Kyozaburo.

    In: Journal of Physics Condensed Matter, Vol. 21, No. 6, 064230, 2009.

    Research output: Contribution to journalArticle

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