Spin Seebeck effect in antiferromagnets and compensated ferrimagnets

Spin Seebeck effect in antiferromagnets and compensated ferrimagnets

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 f...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Vol. 87; no. 1
Main Authors: Ohnuma, Yuichi, Adachi, Hiroto, Saitoh, Eiji, Maekawa, Sadamichi
Format: Journal Article
Language:English
Published: 22-01-2013
Subjects:
Antiferromagnetism
Compensation
Condensed matter
Ferrimagnets
Magnetization
Saturation (magnetic)
Seebeck effect
Spin waves
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Summary: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.
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content type line 23
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.87.014423