Pulse-width dependence of spin-orbit torque switching in Mn3Sn/Pt thin films

被引：1

作者：

Kobayashi, Yuta ^{[1
]}

Shiota, Yoichi ^{[1
,2
]}

Narita, Hideki ^{[1
]}

Ono, Teruo ^{[1
,2
]}

Moriyama, Takahiro ^{[1
,2
,3
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan

[2] Kyoto Univ, Ctr Spintron Res Network, Uji, Kyoto 6110011, Japan

[3] Japan Sci & Technol Agcy, PRESTO, Saitama 3220012, Japan

来源：

APPLIED PHYSICS LETTERS | 2023年 / 122卷 / 12期

关键词：

NONCOLLINEAR ANTIFERROMAGNET;

D O I：

10.1063/5.0144602

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spin-orbit torque (SOT) switching in chiral antiferromagnets, such as D0(19)-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 ? in the D0(19)-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 ? 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 D0(19)-Mn3Sn, which significantly alters the energy landscape relevant to the SOT switching. This assisting mechanism for the SOT switching inhibits an accurate determination of ? but could deliver a smaller ? than the actual. Our study provides cautionary note in estimating the thermal stability of the chiral antiferromagnets.

引用

页数：4

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