| Autor: |
Hoque, Anamul Md., Zhao, Bing, Khokhriakov, Dmitrii, Muduli, Prasanta, Dash, Saroj P. |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 12/12/2022, Vol. 121 Issue 24, p1-6, 6p |
| Abstrakt: |
Quantum materials with a large charge current-induced spin polarization are promising for next-generation all-electrical spintronic science and technology. Van der Waals metals with high spin–orbit coupling and spin textures have attracted significant attention for an efficient charge-to-spin conversion process. Here, we demonstrate the electrical generation of spin polarization in NbSe2 up to room temperature. Characterization of NbSe2 shows superconducting transition temperature, Tc ∼ 7 K. To probe the current-induced spin polarization in NbSe2, we used a graphene-based non-local spin-valve device, where the spin-polarization in NbSe2 is efficiently injected and detected using non-local spin-switch and Hanle spin precession measurements. A significantly higher charge-spin conversion in NbSe2 is observed at a lower temperature. Systematic measurements provide the possible origins of the spin polarization to be predominantly due to the spin Hall effect or Rashba–Edelstein effect in NbSe2, considering different symmetry-allowed charge-spin conversion processes. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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