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<p>We review various approaches to field-free spin-orbit torque (SOT) switching. One approach involves introducing in-plane symmetric breaking methods to conventional SOT, such as an in-plane effective magnetic field or magnetic anisotropy, spatial non-uniformity, or a spin current density gradient. Another approach explores unconventional SOTs, which exploit out-of-plane spin polarization in low-symmetry materials or magnetic trilayer structures. Furthermore, we discuss the potential of field-free-SOT devices for various applications.</p>

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Field-free spin-orbit torques switching and its applications

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月8日

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  • Min-Gu Kang,
  • Soogil Lee,
  • Byong-Guk Park

摘要

We review various approaches to field-free spin-orbit torque (SOT) switching. One approach involves introducing in-plane symmetric breaking methods to conventional SOT, such as an in-plane effective magnetic field or magnetic anisotropy, spatial non-uniformity, or a spin current density gradient. Another approach explores unconventional SOTs, which exploit out-of-plane spin polarization in low-symmetry materials or magnetic trilayer structures. Furthermore, we discuss the potential of field-free-SOT devices for various applications.