Thermal Contribution to the Spin-Orbit Torque in Metallic-Ferrimagnetic Systems

被引：58

作者：

Thai Ha Pham ^{[1
]}

Je, S. -G. ^{[1
,2
]}

Vallobra, P. ^{[1
]}

Fache, T. ^{[1
]}

Lacour, D. ^{[1
]}

Malinowski, G. ^{[1
]}

Cyrille, M. C. ^{[3
]}

Gaudin, G. ^{[2
]}

Boulle, O. ^{[2
]}

Hehn, M. ^{[1
]}

Rojas-Sanchez, J. -C. ^{[1
]}

Mangin, S. ^{[1
]}

机构：

[1] Univ Lorraine, Inst Jean Lamour, CNRS UMR 7198, F-54011 Nancy, France

[2] CNRS, SPINTEC, F-38000 Grenoble, France

[3] CEA, Technol Res Inst, Leti, F-38000 Grenoble, France

来源：

PHYSICAL REVIEW APPLIED | 2018年 / 9卷 / 06期

关键词：

MAGNETIZATION;

D O I：

10.1103/PhysRevApplied.9.064032

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Two important goals for emerging spintronic applications exploiting current-induced magnetization switching are reducing the critical current to switch the magnetization and reducing or eliminating the need for an external in-plane magnetic field for deterministic magnetization reversal. Here, we present experimental studies of the heavy-metal-ferrimagnetic bilayer system, W/CoxTb1-x characterized using magnetometry and anomalous Hall resistance measurements for temperatures ranging from 10 to 350 K. The current-induced-switching experiments are performed in the spin-orbit torque geometry where the current pulses are injected in plane and the magnetization reversal is detected by the measurement of the Hall resistance. The full magnetization reversal has been observed in all samples. Despite its large perpendicular magnetic anisotropy we find magnetic reversal for a strongly reduced in-plane magnetic field which is due to thermal contribution to switching. We find a characteristic switching temperature T-switch induced by Joule heating which is above the magnetic, T-Mcomp, and angular, T-A comp, compensation temperatures but below its Curie temperature.

引用

页数：9

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