Magnon-Dragged Magnetoresistance and Spin Seebeck Effect in YIG/IrMn Thin Films

被引：2

作者：

Cai, Y. Z. ^{[1
]}

Li, W. T. ^{[1
]}

Wu, Y. ^{[1
]}

Meng, K. K. ^{[1
]}

Miao, J. ^{[1
]}

Guang, X. X. ^{[1
]}

Jiang, Y. ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2018年 / 54卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Ir20Mn80 (IrMn); magnon-dragged magnetoresistance; magnon transport; spin Seebeck effect (SSE); MAGNETIC INSULATOR; TRANSPORT;

D O I：

10.1109/TMAG.2018.2846766

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report the magnon-dragged magnetoresistance and spin Seebeck effect simultaneously in lateral yttrium iron garnet (YIG)/Ir20Mn80 thin films, which are detected as R-drag and R-SSE, respectively, namely, the nonlocal inverse spin Hall voltages quantified by the injected current. According to their different dependences on applied current, R-drag and R-SSE can be separated as the antisymmetric and symmetric part of the nonlocal signals. By a simple magnon diffusion model, the diffusion length of electrically generated magnons is calculated which is comparable to the values reported in YIG/Pt structures. The low magnetic field and the temperature dependences of R-drag and R-SSE are found to be different, indicating that the origin and transport properties of magnons associated with these two effects are distinct.

引用

页数：5

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