Large spin to charge conversion in the topological superconductor β−PdBi2 at room temperature
| العنوان: | Large spin to charge conversion in the topological superconductor β−PdBi2 at room temperature |
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| المؤلفون: | Na Li, Shijia Yang, Jian-jun Zhao, Zong-Kai Xie, Zi-Zhao Gong, Xiang-Qun Zhang, Yan Li, Wei He, Lei Su, Xu Yang, Eric Vetter, Rui Sun, Yang Li, Zhao-Hua Cheng, Yun-bin Sun, Dali Sun |
| المصدر: | Physical Review B. 102 |
| بيانات النشر: | American Physical Society (APS), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Physics, Spin pumping, Spintronics, Inverse, Charge (physics), 02 engineering and technology, 021001 nanoscience & nanotechnology, Topology, Coupling (probability), 01 natural sciences, Topological insulator, 0103 physical sciences, Spin Hall effect, 010306 general physics, 0210 nano-technology, Spin-½ |
| الوصف: | $\ensuremath{\beta}\text{\ensuremath{-}}\mathrm{PdB}{\mathrm{i}}_{2}$ has attracted much attention for its prospective ability to possess simultaneously topological surface and superconducting states due to its unprecedented spin-orbit interaction (SOC). Whereas most works have focused solely on investigating its topological surface states, the coupling between spin and charge degrees of freedom in this class of quantum material remains unexplored. Here, we report a study of spin-to-charge conversion in a $\ensuremath{\beta}\text{\ensuremath{-}}\mathrm{PdB}{\mathrm{i}}_{2}$ ultrathin film grown by molecular beam epitaxy, utilizing a spin pumping technique to perform inverse spin Hall effect measurements. We find that the room temperature spin Hall angle of $\mathrm{Fe}/\ensuremath{\beta}\text{\ensuremath{-}}\mathrm{PdB}{\mathrm{i}}_{2}$, ${\ensuremath{\theta}}_{SH}=0.037$. This value is one order of magnitude larger than that of reported conventional superconductors, and is comparable to that of the best SOC metals and topological insulators. Our results provide an avenue for developing superconductor-based spintronic applications. |
| تدمد: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.102.014420 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::91dfe136ba12fa0a7e6b38b3ae7a8274 https://doi.org/10.1103/physrevb.102.014420 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi...........91dfe136ba12fa0a7e6b38b3ae7a8274 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24699969 24699950 |
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| DOI: | 10.1103/physrevb.102.014420 |