2018 Fiscal Year Annual Research Report
Fabrication of Weyl semimetals based spintronic heterostructures for future energy-efficient IT devices
| Project/Area Number |
17K14652
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
温 振超 国立研究開発法人物質・材料研究機構, 磁性・スピントロニクス材料研究拠点, 主任研究員 (40784773)
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| Project Period (FY) |
2017-04-01 – 2019-03-31
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| Keywords | Weyl semimetals |
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| Outline of Annual Research Achievements |
The Weyl semimetals (WSs) are a kind of new topological materials, which have been predicted to have large spin-orbit effects and are important for fabricating energy-efficient devices. In this study, we successfully fabricated three WSs, i.e. WTe2, MoTe2, and Co2MnGa, by sputtering method, and investigated spin orbit effects in the WSs based heterostructures. After characterization of structural properties, sizeable spin orbit effects were observed in the sputtered WTe2 and MoTe2 thin films. Furthermore, a remarkable spin orbit effect with unique structural dependence was achieved in Co2MnGa thin films, which could be attributed to their electronic structures. The results may contribute to further understanding of spin-orbit effects in WSs for developing future energy-efficient IT devices.
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