Effect of spin polarized current on magnetic phase transition of ordered FeRh wires
Effect of spin polarized current on magnetic phase transition of ordered FeRh wires
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DOI：
10.1063/1.3553941
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发表时间：
2011-03
影响因子：
3.2
通讯作者：
T. Naito;I. Suzuki;M. Itoh;T. Taniyama
中科院分区：
文献类型：
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作者：
T. Naito;I. Suzuki;M. Itoh;T. Taniyama
报道了自旋极化电流从Co线注入B2有序FeRh线的实验结果，发现在370 K时，FeRh线发生了从反铁磁（AF）态到铁磁态的磁相变. Co/FeRh线结样品的电流-电压特性在低于380 K的AF状态下显示出显著的特征，而在高于380 K时该特征消失，表明该显著特征与自旋极化电流注入FeRh线引起的反铁磁-铁磁相变有关。我们属性的自旋极化电流诱导相变的s-d交换相互作用所产生的巡游电子和Rh原子的自旋极化的FeRh线的可能调制。
We report on spin polarized current injection from Co wires into a B2-ordered FeRh wire, which shows the magnetic phase transition from the antiferromagnetic (AF) state to the ferromagnetic state at 370 K. Current–voltage characteristics of a Co/FeRh wires junction sample show a marked feature in the AF state below 380 K, while the feature disappears above 380 K, indicating that the noticeable feature is associated with the antiferromanetic–ferromagnetic phase transition induced by the spin polarized current injection into the FeRh wire. We attribute the spin polarized current induced phase transition to a possible modulation of the s-d exchange interaction arising from the spin polarization of itinerant electrons and Rh atoms in the FeRh wire.