Journal
PHYSICAL REVIEW LETTERS
Volume 126, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.126.127701
Keywords
-
Categories
Funding
- Czech Science Foundation [19-18623Y]
- Ministry of Education of the Czech Republic [LM2018096, LM2018110, LM2018140, LNSM-LNSpin]
- EU FET Open RIA [766566]
- Deutsche Forschungsgemeinschaft [TRR 173 268565370]
- Max Planck Partner Group programme
- Alexander Von Humboldt Foundation
Ask authors/readers for more resources
Through ab initio calculations, it was discovered that the metallic collinear antiferromagnet RuO2 can efficiently generate spin current at room temperature, with a 34 degrees propagation angle between spin-up and spin-down currents. The corresponding spin conductivity is three times larger than the highest value found in a survey of 20,000 nonmagnetic spin-Hall materials. A versatile spin-splitter-torque concept is proposed to overcome limitations in current magnetic memory devices.
Spin-current generation by electrical means is among the core phenomena driving the field of spintronics. Using ab initio calculations we show that a room-temperature metallic collinear antiferro-magnet RuO2 allows for highly efficient spin-current generation, arising from anisotropically spin-split bands with conserved up and down spins along the Neel vector axis. The zero net moment antiferromagnet acts as an electrical spin splitter with a 34 degrees propagation angle between spin-up and spin-down currents. The corresponding spin conductivity is a factor of 3 larger than the record value from a survey of 20 000 nonmagnetic spin-Hall materials. We propose a versatile spin-splitter-torque concept circumventing limitations of spin-transfer and spin-orbit torques in present magnetic memory devices.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available