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Sizable spin-transfer torque in Bi/Ni80Fe20 bilayer film

arXiv
Authors: M. Matsushima, S. Miwa, S. Sakamoto, T. Shinjo, R. Ohshima, Y. Ando, Y. Fuseya, M. Shiraishi

Year

2020

Paper ID

22121

Status

Preprint

Abstract Read

~2 min

Abstract Words

95

Citations

N/A

Abstract

The search for efficient spin conversion in Bi has attracted great attention in spin-orbitronics. In the present work, we employ spin-torque ferromagnetic resonance to investigate spin conversion in Bi/Ni80Fe20(Py) bilayer films with continuously varying Bi thickness. In contrast with previous studies, sizable spin-transfer torque (i.e., a sizable spin-conversion effect) is observed in Bi/Py bilayer film. Considering the absence of spin conversion in Bi/yttrium-iron-garnet bilayers and the enhancement of spin conversion in Bi-doped Cu, the present results indicate the importance of material combinations to generate substantial spin-conversion effects in Bi.

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  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
  • It adds a 2020 reference point for readers tracking recent quantum research.
  • The search for efficient spin conversion in Bi has attracted great attention in spin-orbitronics.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2007.09830 [2] arXiv https://arxiv.org/abs/2007.09830 [3] Publisher https://arxiv.org/abs/2007.09830

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