• Title/Summary/Keyword: 스핀-궤도 돌림힘

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Optical measurement and analysis technique for spin-orbit torques (스핀-궤도 돌림힘의 광학적 측정 및 분석법)

  • Yun, Sang-Jun;Moon, Joon;Whang, Hyun-Seok;Choe, Sug-Bong
    • Journal of the Korean Magnetics Society
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    • v.25 no.1
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    • pp.1-3
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    • 2015
  • We demonstrate here an optical measurement technique to quantify the spin-orbit torques. The magnetization dynamics induced by the spin-orbit torques with a sinusoidal current injection is measured by use of polar magneto-optical Kerr effect. The measured signal is then analyzed based on the Landau-Lifhshitz-Gilbert equation with consideration of the spin-orbit torques. The present measurement technique is applied to Pd/Co/Pt films and then, the longitudinal and transverse components of the spin-orbit torques are successfully quantified. The present optical technique provides an alternative way to quantify the spin-orbit torques.