Antiferromagnetic coupling between semiconductor quantum dots

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

    Research output: Contribution to journal › Article

    11 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)25-29
    Number of pages5
    JournalPhysica B: Condensed Matter
    Volume314
    Issue number1-4
    DOIs
    Publication statusPublished - 2002 Mar

    Fingerprint

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

    Keywords

    • Antiferromagnetization
    • Quantum dots
    • Spin

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics

    Cite this

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

    In: Physica B: Condensed Matter, Vol. 314, No. 1-4, 03.2002, p. 25-29.

    Research output: Contribution to journal › Article

    Tackeuchi, A, Kuroda, T, Sasou, R, Nakata, Y & Yokoyama, N 2002, 'Antiferromagnetic coupling between semiconductor quantum dots', Physica B: Condensed Matter, vol. 314, no. 1-4, pp. 25-29. https://doi.org/10.1016/S0921-4526(01)01394-1
    Tackeuchi A, Kuroda T, Sasou R, Nakata Y, Yokoyama N. Antiferromagnetic coupling between semiconductor quantum dots. Physica B: Condensed Matter. 2002 Mar;314(1-4):25-29. https://doi.org/10.1016/S0921-4526(01)01394-1
    Tackeuchi, Atsushi ; Kuroda, T. ; Sasou, R. ; Nakata, Y. ; Yokoyama, N. / Antiferromagnetic coupling between semiconductor quantum dots. In: Physica B: Condensed Matter. 2002 ; Vol. 314, No. 1-4. pp. 25-29.
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