Current direction dependent spin Hall magnetoresistance in epitaxial Pt/Co bilayers on MgO(110)

被引：15

作者：

Thompson, Ryan ^{[1
]}

Ryu, Jeongchun ^{[2
]}

Du, Ye ^{[1
,3
]}

Karube, Shutaro ^{[1
,4
]}

Kohda, Makoto ^{[1
,3
,4
]}

Nitta, Junsaku ^{[1
,3
,4
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Sendai, Miyagi 9808579, Japan

[2] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Daejeon 34141, South Korea

[3] Tohoku Univ, Ctr Sci & Innovat Spintron, Core Res Cluster, Org Adv Studies, Sendai, Miyagi 9808577, Japan

[4] Tohoku Univ, Ctr Spintron Res Network, Sendai, Miyagi 9808577, Japan

来源：

PHYSICAL REVIEW B | 2020年 / 101卷 / 21期

关键词：

RESONANCE;

D O I：

10.1103/PhysRevB.101.214415

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate that the spin Hall magnetoresistance (SMR) of epitaxial Pt/Co bilayers on MgO(110) single crystal substrates is strongly anisotropic and depends on the applied current direction with respect to the two primary in-plane crystal directions [001] and [1 (1) over bar0], in the Pt layer. SMR results at different temperatures qualitatively suggest the D'yakonov-Perel spin relaxation mechanism through the invariance of the spin diffusion length.s f for a given current direction, while also suggesting an anisotropic Rashba-Edelstein effect from the ratio of lambda ([001])(sf) to lambda([1 (1) over bar0])(sf). Finally, deviation from the standard SMR model spurs the need for new theory that properly characterizes and quantifies the anisotropies in such epitaxial systems.

引用

页数：9