Large out-of-plane spin-orbit torque in topological Weyl semimetal TaIrTe4
| العنوان: | Large out-of-plane spin-orbit torque in topological Weyl semimetal TaIrTe4 |
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| المؤلفون: | Bainsla, Lakhan, Zhao, Bing, Behera, Nilamani, Hoque, Anamul Md., Sjöström, Lars, Martinelli, Anna, Abdel-Hafiez, Mahmoud, Åkerman, Johan, Dash, Saroj P. |
| المصدر: | Nature Communications. 15 |
| الوصف: | The unique electronic properties of topological quantum materials, such as protected surface states and exotic quasiparticles, can provide an out-of-plane spin-polarized current needed for external field-free magnetization switching of magnets with perpendicular magnetic anisotropy. Conventional spin-orbit torque (SOT) materials provide only an in-plane spin-polarized current, and recently explored materials with lower crystal symmetries provide very low out-of-plane spin-polarized current components, which are not suitable for energy-efficient SOT applications. Here, we demonstrate a large out-of-plane damping-like SOT at room temperature using the topological Weyl semimetal candidate TaIrTe4 with a lower crystal symmetry. We performed spin-torque ferromagnetic resonance (STFMR) and second harmonic Hall measurements on devices based on TaIrTe4/Ni80Fe20 heterostructures and observed a large out-of-plane damping-like SOT efficiency. The out-of-plane spin Hall conductivity is estimated to be (4.05±0.23)x104 (ℏ/2e) (Ωm)-1, which is an order of magnitude higher than the reported values in other materials. |
| وصف الملف: | electronic |
| URL الوصول: | https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-534874 https://doi.org/10.1038/s41467-024-48872-3 https://uu.diva-portal.org/smash/get/diva2:1883869/FULLTEXT01.pdf |
| قاعدة البيانات: | SwePub |
| DOI: | 10.1038/s41467-024-48872-3 |
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