Spin Hall magnetoresistance at high temperatures

被引：25

作者：

Uchida, Ken-ichi ^{[1
,2
,3
]}

Qiu, Zhiyong ^{[3
,4
]}

Kikkawa, Takashi ^{[1
,3
]}

Iguchi, Ryo ^{[1
,3
]}

Saitoh, Eiji ^{[1
,3
,4
,5
,6
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

[3] Japan Sci & Technol Agcy, ERATO, Spin Quantum Rectificat Project, Sendai, Miyagi 9808577, Japan

[4] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

[5] Japan Sci & Technol Agcy, CREST, Tokyo 1020076, Japan

[6] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

来源：

APPLIED PHYSICS LETTERS | 2015年 / 106卷 / 05期

关键词：

ROOM-TEMPERATURE; TUNNEL-JUNCTIONS;

D O I：

10.1063/1.4907546

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The temperature dependence of spin Hall magnetoresistance (SMR) in Pt/Y3Fe5O12 (YIG) bilayer films has been investigated in a high temperature range from room temperature to near the Curie temperature of YIG. The experimental results show that the magnitude of the magnetoresistance ratio induced by the SMR monotonically decreases with increasing the temperature and almost disappears near the Curie temperature. We found that, near the Curie temperature, the temperature dependence of the SMR in the Pt/YIG film is steeper than that of a magnetization curve of the YIG; the critical exponent of the magnetoresistance ratio is estimated to be 0.9. This critical behavior of the SMR is attributed mainly to the temperature dependence of the spin-mixing conductance at the Pt/YIG interface. (C) 2015 AIP Publishing LLC.

引用

页数：5

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