2017年5月
Concomitant enhancement of the longitudinal spin Seebeck effect and the thermal conductivity in a Pt/YIG/Pt system at low temperatures
PHYSICAL REVIEW B
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- 巻
- 95
- 号
- 17
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevB.95.174401
- 出版者・発行元
- AMER PHYSICAL SOC
We report a simultaneous measurement of a longitudinal spin Seebeck effect (LSSE) and thermal conductivity in a Pt/Y3Fe5O12 (YIG)/Pt system in a temperature range from 10 to 300 K. By directly monitoring the temperature difference in the system, we excluded thermal artifacts in the LSSE measurements. It is found that both the LSSE signal and the thermal conductivity of YIG exhibit sharp peaks at the same temperature, different from previous reports. The maximum LSSE coefficient is found to be S-LSSE > 10 mu V/K, one-order-of magnitude greater than the previously reported values. The concomitant enhancement of the LSSE and thermal conductivity of YIG suggests the strong correlation between magnon and phonon transport in the LSSE.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevB.95.174401
- ISSN : 2469-9950
- eISSN : 2469-9969
- Web of Science ID : WOS:000400659400002