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.
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页数：5
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