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Transverse thermoelectric conversion phenomena including the anomalous Ettingshausen effect (AEE) and anomalous Nernst effect (ANE) in magnetic materials have been actively investigated to realize versatile cooling and energy harvesting technologies, respectively. However, further improvement of thermoelectric performance of AEE and ANE is still required, and most research efforts have focused on material exploration. Here, a new approach to improve the transverse thermoelectric conversion performance through interface engineering is reported by focusing on the transverse thermoelectric phenomena that output heat currents. A longitudinal charge current in a ferromagnetic metal Ni/nonmagnetic insulator Bi2WO6 hybrid-structure induces a larger transverse heat current than that of AEE in a Ni single-layer. It is indicated that the enhancement of the transverse thermoelectric conversion is due to the generation of a heat current concomitant with a spin current induced at the Ni/Bi2WO6 interface. This finding demo

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: transverse thermoelectric conversion, anomalous Ettingshausen effect, spin Peltier effect, Rashba-Edelstein effect

Date published: 2024-09-10

Publisher: Wiley

Journal:

• Advanced Functional Materials (ISSN: 1616301X) vol. 34 issue. 49

Funding:

• Japan Society for the Promotion of Science 22H04965 (Grant-in-Aid for Scientific Research (S))
• JST JPMJER2201 (Exploratory Research for Advanced Technology (ERATO))
• ARIM of MEXT JPMXP1223NM5238

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5100

First published URL: https://doi.org/10.1002/adfm.202409557

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Updated at: 2024-12-06 17:17:50 +0900

Published on MDR: 2024-12-06 17:17:50 +0900