反铁磁性
凝聚态物理
物理
磁化
自旋电子学
自旋(空气动力学)
分路器
铁磁性
自旋极化
磁场
光学
量子力学
电子
热力学
作者
Shutaro Karube,Takahiro Tanaka,Daichi Sugawara,Naohiro Kadoguchi,Makoto Kohda,Junsaku Nitta
标识
DOI:10.1103/physrevlett.129.137201
摘要
The spin-splitter effect is theoretically predicted to generate an unconventional spin current with x- and z- spin polarization via the spin-split band in antiferromagnets. The generated torque, namely, spin-splitter torque, is effective for the manipulation of magnetization in an adjacent magnetic layer without an external magnetic field for spintronic devices such as MRAM. Here, we study the generation of torque in collinear antiferromagnetic RuO_{2} with (100), (101), and (001) crystal planes. Next we find all x-, y-, and z-polarized spin currents depending on the Néel vector direction in RuO_{2}(101). For RuO_{2}(100) and (001), only y-polarized spin current was present, which is independent of the Néel vector. Using the z-polarized spin currents, we demonstrate field-free switching of the perpendicular magnetized ferromagnet at room temperature. The spin-splitter torque generated from RuO_{2} is verified to be useful for the switching phenomenon and paves the way for a further understanding of the detailed mechanism of the spin-splitter effect and for developing antiferromagnetic spin-orbitronics.
科研通智能强力驱动
Strongly Powered by AbleSci AI