Antiferromagnetic coupling between semiconductor quantum dots

Atsushi Tackeuchi, T. Kuroda, R. Sasou, Y. Nakata, N. Yokoyama

    研究成果: Article

    11 引用 (Scopus)

    抄録

    We have investigated magnetic coupling between semiconductor quantum dots. The antiferromagnetization process based on the interdot exchange interaction has been directly observed using time-resolved spin-dependent photoluminescence measurements. The antiferromagnetic order that proves the interdot exchange interaction energy to be negative is found to exist at temperatures lower than 50-80 K. The spin relaxation time under the antiferromagnetic order is extended to 10-12 ns, an order of magnitude longer than that in isolated quantum dots.

    元の言語English
    ページ(範囲)25-29
    ページ数5
    ジャーナルPhysica B: Condensed Matter
    314
    発行部数1-4
    DOI
    出版物ステータスPublished - 2002 3

    Fingerprint

    Exchange interactions
    Semiconductor quantum dots
    quantum dots
    Magnetic couplings
    Relaxation time
    Photoluminescence
    relaxation time
    interactions
    photoluminescence
    Temperature
    energy

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics

    これを引用

    Antiferromagnetic coupling between semiconductor quantum dots. / Tackeuchi, Atsushi; Kuroda, T.; Sasou, R.; Nakata, Y.; Yokoyama, N.

    :: Physica B: Condensed Matter, 巻 314, 番号 1-4, 03.2002, p. 25-29.

    研究成果: Article

    Tackeuchi, Atsushi ; Kuroda, T. ; Sasou, R. ; Nakata, Y. ; Yokoyama, N. / Antiferromagnetic coupling between semiconductor quantum dots. :: Physica B: Condensed Matter. 2002 ; 巻 314, 番号 1-4. pp. 25-29.
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