TY - JOUR
T1 - Seebeck-driven transverse thermoelectric generation
AU - Zhou, Weinan
AU - Yamamoto, Kaoru
AU - Miura, Asuka
AU - Iguchi, Ryo
AU - Miura, Yoshio
AU - Uchida, Ken ichi
AU - Sakuraba, Yuya
N1 - Funding Information:
We thank M. Isomura, N. Kojima, B. Masaoka, T. T. Sasaki, K. Suzuki and B. S. D. Ch. S. Varaprasad for their support in sample preparation, and T. Seki and M. Murata for valuable discussions. This work was supported in part by JST PRESTO ‘Scientific Innovation for Energy Harvesting Technology’ (grant no. JPMJPR17R5), JST CREST ‘Creation of Innovative Core Technologies for Nano-enabled Thermal Management’ (grant no. JPMJCR17I1) and New Energy and Industrial Technology Development Orgnization (NEDO) ‘Mitou’ challenge 2050 (grant no. P14004). A.M. is supported by Japan Society for the Promotion of Science (JSPS) through a Research Fellowship for Young Scientists (JP18J02115).
Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature Limited.
PY - 2021/4
Y1 - 2021/4
N2 - When a temperature gradient is applied to a closed circuit comprising two different conductors, a charge current is generated via the Seebeck effect1. Here, we utilize the Seebeck-effect-induced charge current to drive ‘transverse’ thermoelectric generation, which has great potential for energy harvesting and heat sensing applications owing to the orthogonal geometry of the heat-to-charge-current conversion2–9. We found that, in a closed circuit comprising thermoelectric and magnetic materials, artificial hybridization of the Seebeck effect into the anomalous Hall effect10 enables transverse thermoelectric generation with a similar symmetry to the anomalous Nernst effect11–27. Surprisingly, the Seebeck-effect-driven transverse thermopower can be several orders of magnitude larger than the anomalous-Nernst-effect-driven thermopower, which is clearly demonstrated by our experiments using Co2MnGa/Si hybrid materials. The unconventional approach could be a breakthrough in developing applications of transverse thermoelectric generation.
AB - When a temperature gradient is applied to a closed circuit comprising two different conductors, a charge current is generated via the Seebeck effect1. Here, we utilize the Seebeck-effect-induced charge current to drive ‘transverse’ thermoelectric generation, which has great potential for energy harvesting and heat sensing applications owing to the orthogonal geometry of the heat-to-charge-current conversion2–9. We found that, in a closed circuit comprising thermoelectric and magnetic materials, artificial hybridization of the Seebeck effect into the anomalous Hall effect10 enables transverse thermoelectric generation with a similar symmetry to the anomalous Nernst effect11–27. Surprisingly, the Seebeck-effect-driven transverse thermopower can be several orders of magnitude larger than the anomalous-Nernst-effect-driven thermopower, which is clearly demonstrated by our experiments using Co2MnGa/Si hybrid materials. The unconventional approach could be a breakthrough in developing applications of transverse thermoelectric generation.
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U2 - 10.1038/s41563-020-00884-2
DO - 10.1038/s41563-020-00884-2
M3 - Article
C2 - 33462463
AN - SCOPUS:85100022502
SN - 1476-1122
VL - 20
SP - 463
EP - 467
JO - Nature Materials
JF - Nature Materials
IS - 4
ER -