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Time-resolved study of field-induced suppression of longitudinal spin Seebeck effect

縦型スピンSeebeck効果における高磁場抑制の実時間測定

日置 友智*; 井口 亮*; Qiu, Z.*; Hou, D.*; 内田 健一*; 齊藤 英治

Hioki, Tomosato*; Iguchi, Ryo*; Qiu, Z.*; Hou, D.*; Uchida, Kenichi*; Saito, Eiji

We have investigated the magnetic-field-induced suppression of the longitudinal spin Seebeck effect (LSSE) by using a time-resolved measurement technique at room temperature. The result manifested two distinctive time domains: the short-time domain where the observed voltage is insensitive to the magnetic fields, and the long-time domain where the both response time and the magnitude of the observed voltage decreased simultaneously by the magnetic fields. We estimated the magnon propagation length by fitting the transient LSSE response. The propagation length shows a strong dependence on the applied magnetic field, indicating the importance of long-range and low-frequency magnons in the LSSE.

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パーセンタイル:43.58

分野:Physics, Applied

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