Spin Seebeck effect in antiferromagnets and compensated ferrimagnets
Spin Seebeck effect in antiferromagnets and compensated ferrimagnets
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DOI：
10.1103/physrevb.87.014423
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发表时间：
2013-01-22
影响因子：
3.7
通讯作者：
Maekawa, Sadamichi
中科院分区：
文献类型：
--
作者：
Ohnuma, Yuichi;Adachi, Hiroto;Maekawa, Sadamichi
我们从理论上研究了反铁磁体和亚铁磁体中的自旋Seebeck效应(SSE)，结果表明，即使没有饱和磁化，自旋Seebeck效应在反铁磁体中也消失了，但在亚铁磁体中仍然存在，即使在磁化补偿点也是如此。亚铁磁体中的非零SSE来源于两个非简并的磁子。我们证明了亚铁磁体中SSE的大小在磁化补偿点上是不变的。
We theoretically investigate the spin Seebeck effect (SSE) in antiferromagnets and ferrimagnets, and show that the SSE vanishes in antiferromagnets but survives in ferrimagnets even at the magnetization compensation point despite the absence of its saturation magnetization. The nonvanishing SSE in ferrimagnets stems from two nondegenerate magnons. We demonstrate that the magnitude of the SSE in ferrimagnets is unchanged across the magnetization compensation point.