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説明:

Hybrid transverse thermoelectric conversion driven by simultaneous action of multiple phenomena offers a promising route for efficient energy conversion. This study demonstrates magnetic-field-free hybrid transverse thermoelectric conversion based on the anomalous Nernst and off-diagonal Seebeck effects in artificially tilted multilayers comprising SmCo5/Bi0.2Sb1.8Te3 junctions, where the remanent magnetization of SmCo5 induces the anomalous Nernst effect in the absence of an external magnetic field. The thermoelectric figure of merit is observed to be 0.299 ± 0.005 at room temperature owing to the additive contribution of the anomalous Nernst effect, indicating that the excellent figure of merit due to the off-diagonal Seebeck effect can further be enhanced by hybridizing the anomalous Nernst effect. These results establish a new approach for high-performance transverse thermoelectric materials, enabling energy harvesting and cooling applications that leverage magnetically controlled thermoelectric effects without requiring an external magnetic field.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: anomalous Nernst effect, artificially tilted multilayer, off-diagonal Seebeck effect, permanent magnet, transverse thermoelectrics

刊行年月日: 2025-06-29

出版者: Wiley

掲載誌:

• Annalen der Physik (ISSN: 00033804) vol. 537 issue. 8 e00127

研究助成金:

• Japan Science and Technology Agency JPMJER2201
• Japan Society for the Promotion of Science 24K17610

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1002/andp.202500127

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更新時刻: 2025-08-18 16:30:49 +0900

MDRでの公開時刻: 2025-08-18 16:21:28 +0900