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Complete suppression of longitudinal spin Seebeck effect by frozen magnetization dynamics in Y$$_{3}$$Fe$$_{5}$$O$$_{12}$$

Kikkawa, Takashi*; Uchida, Kenichi*; Daimon, Shunsuke*; Saito, Eiji

The spin Seebeck effect (SSE) in a Pt-film/Y$$_{3}$$Fe$$_{5}$$O$$_{12}$$ (YIG)-slab junction system has been investigated at low temperatures and under various magnetic fields in the longitudinal configuration. We found that, by increasing applied magnetic fields, the SSE signal gradually decreases and converges to zero without showing sign reversal. The complete field-induced suppression of the SSE is interpreted in terms of the effect of the Zeeman gap in magnon excitation.



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Category:Physics, Multidisciplinary



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