Current driven motion of magnetic domain walls

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Other Title
  • 電流による磁区の一斉移動
  • 電流による磁区の一斉移動 : スピン軌道相互作用を利用した磁化制御技術の新展開
  • デンリュウ ニ ヨル ジク ノ イッセイ イドウ : スピン キドウ ソウゴ サヨウ オ リヨウ シタ ジカ セイギョ ギジュツ ノ シン テンカイ
  • new paradigms for controlling magnetism using spin orbit effects
  • スピン軌道相互作用を利用した磁化制御技術の新展開

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Abstract

<p>Ultrathin magnetic heterostructures are attracting great interest recently as new phenomena and novel physics related to spin orbit coupling have been revealed. Manipulating magnetic moments with an electrical current plays an essential role in Spintronics. To date, spin polarized current and spin transfer torque have been used to control the direction of magnetic moments. New paradigms for current controlled magnetism have been made possible recently by the introduction of materials or film structures with a large spin orbit coupling. In this article, I will discuss recent developments in current driven domain wall motion in nanowires made of ultrathin magnetic heterostructures. With the spin Hall effect and the anti-symmetric exchange interaction known as the Dzyaloshinskii-Moriya interaction, an unconventional mechanism for current driven domain wall motion is described: the direction to which a domain wall moves with current and its velocity can now be tuned by the materials and stacking of the heterostructure.</p>

Journal

  • Oyo Buturi

    Oyo Buturi 83 (7), 547-552, 2014-07-10

    The Japan Society of Applied Physics

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