التفاصيل البيبلوغرافية
| العنوان: |
Pulse-width dependence of spin–orbit torque switching in Mn3Sn/Pt thin films. |
| المؤلفون: |
Kobayashi, Yuta, Shiota, Yoichi, Narita, Hideki, Ono, Teruo, Moriyama, Takahiro |
| المصدر: |
Applied Physics Letters; 3/20/2023, Vol. 122 Issue 12, p1-4, 4p |
| مصطلحات موضوعية: |
THIN films, MAGNETIC transitions, TORQUE, THERMAL stability |
| مستخلص: |
Spin–orbit torque (SOT) switching in chiral antiferromagnets, such as D019-Mn3Sn, has opened prospects in antiferromagnetic spintronics. In this paper, we investigated the critical switching voltage as a function of the voltage pulse width in order to explore the thermal stability factor Δ in the D019-Mn3Sn. Although the critical switching voltage is found to decrease with increasing the voltage pulse width as expected by the thermally activated switching process with Δ of 131.1 at 300 K, our detailed examinations reveal that the Joule heating due to the voltage pulse could induce the magnetic phase transition in the D019-Mn3Sn, which significantly alters the energy landscape relevant to the SOT switching. This assisting mechanism for the SOT switching inhibits an accurate determination of Δ but could deliver a smaller Δ than the actual. Our study provides cautionary note in estimating the thermal stability of the chiral antiferromagnets. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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