Large anomalous Nernst angle in Co2MnGa thin film

Hu，Junfeng1; Zhang，Yao2; Huo，Xiayu3; Li，Ningsheng3; Liu，Song4; Yu，Dapeng4; Ansermet，Jean Philippe5; Granville，Simon2; Yu，Haiming6

2022

10.1109/LMAG.2022.3167332

IEEE Magnetics Letters   影响因子和分区

1949-307X

1949-3088

The new trends for anomalous Nernst effect (ANE)-based thermoelectric devices require materials with large ANE values to realize the scalable generation of voltage. Recently very large ANE values have been observed in single crystals of some novel magnetic materials. However, to allow work to proceed on developing ANE-based devices, these materials need to be produced in thin film form, and to date thin films have not achieved the same large ANE values as in the bulk. Here, we report a large ANE in a 50 nm thick film of ferromagnetic Heusler alloy Co2MnGa, matching the values achieved in bulk material. By systematically mapping the thermoelectric transport properties, we extracted an anomalous Nernst angle in the range of 11.5% to 14.2% at 300 K.

anomalous Nernst effect Films Heusler alloy Magnetic field measurement Magnetic fields Saturation magnetization Spin Electronics Temperature distribution Temperature measurement thermoelectric generation thin film Voltage measurement

EI

英语

其他

2-s2.0-85128639342

Scopus

1.Integrated Circuit Science and Engineering, Beihang University, 12633 Beijing, China, 100083
2.Robinson Research Institute Victoria University of Wellington, Wellington, New Zealand
3.Beihang University, 12633 Beijing, China
4.Southern University of Science and Technology, 255310 Shenzhen, Guangdong, China
5.LPMN, Ecole Polytechnique Federale Lausanne, Lausanne-EPFL, Switzerland
6.Spintronics Interdisciplinary Center, Beihang University, Beijing, China, 100191

Hu，Junfeng,Zhang，Yao,Huo，Xiayu,et al. Large anomalous Nernst angle in Co2MnGa thin film[J]. IEEE Magnetics Letters,2022.

Hu，Junfeng.,Zhang，Yao.,Huo，Xiayu.,Li，Ningsheng.,Liu，Song.,...&Yu，Haiming.(2022).Large anomalous Nernst angle in Co2MnGa thin film.IEEE Magnetics Letters.

Hu，Junfeng,et al."Large anomalous Nernst angle in Co2MnGa thin film".IEEE Magnetics Letters (2022).