Optical Manipulation of Magnetic Order

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  • 光によるスピン秩序の高速制御
  • ヒカリ ニ ヨル スピン チツジョ ノ コウソク セイギョ

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<p>Optical manipulation of magnetic order is one of the attracting themes in condensed matter physics not only for its fundamental importance but also for the potential technological application. It is known that a promising strategy is to control the exchange interaction by light irradiation. In this research, we examine the double-exchange interaction, which has been recognized as a typical ferromagnetic interaction in metallic compounds. We discover that the double exchange interaction is an “antiferromagnetic interaction” in photoinduced nonequilibrium states. It is also found that, in a transient time domain between the ferromagnetic metal and the photoinduced antiferromagnetic state, the topological spin structure appears. The microscopic mechanism and experimental inspection methods are also introduced.</p>

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  • Butsuri

    Butsuri 75 (2), 77-82, 2020-02-05

    The Physical Society of Japan

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