Efficient Electrical Spin Splitter Based on Nonrelativistic Collinear Antiferromagnetism
書誌事項
- 公開日
- 2021-03-26
- 権利情報
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- https://link.aps.org/licenses/aps-default-license
- DOI
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- 10.1103/physrevlett.126.127701
- 10.48550/arxiv.2002.07073
- 公開者
- American Physical Society (APS)
この論文をさがす
説明
Electrical spin-current generation is among the core phenomena driving the field of spintronics. Using {\em ab initio} calculations we show that a room-temperature metallic collinear antiferromagnet RuO$_2$ allows for highly efficient spin-current generation, arising from anisotropically-split bands with conserved up and down spins along the N��el vector axis. The zero net moment antiferromagnet acts as an electrical spin-splitter with a 34$^\circ$ propagation angle between spin-up and spin-down currents. Correspondingly, the spin-conductivity is a factor of three larger than the record value from a survey of 20,000 non-magnetic spin-Hall materials. We propose a versatile spin-splitter-torque concept utilizing antiferromagnetic RuO$_2$ films interfaced with a ferromagnet.
6 pages, 4 figures
収録刊行物
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- Physical Review Letters
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Physical Review Letters 126 (12), 127701-, 2021-03-26
American Physical Society (APS)