Efficient Electrical Spin Splitter Based on Nonrelativistic Collinear Antiferromagnetism

Gonzalez-Hernandez R, Smejkal L, Vyborny K, Yahagi Y, Sinova J, Jungwirth T, Zelezny J (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Physical Review Letters American Physical Society

Book Volume: 126

Article Number: 127701

Journal Issue: 12

DOI: 10.1103/PhysRevLett.126.127701

Abstract

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 antiferromagnet RuO2 allows for highly efficient spin-current generation, arising from anisotropically spin-split bands with conserved up and down spins along the Neél vector axis. The zero net moment antiferromagnet acts as an electrical spin splitter with a 34° 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.

Involved external institutions

Universidad del Norte CO Colombia (CO) Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE) Academy of Sciences of the Czech Republic (ASCR) / Akademie věd České republiky (AVČR) CZ Czech Republic (CZ) Tohoku University JP Japan (JP)

How to cite

APA:

Gonzalez-Hernandez, R., Smejkal, L., Vyborny, K., Yahagi, Y., Sinova, J., Jungwirth, T., & Zelezny, J. (2021). Efficient Electrical Spin Splitter Based on Nonrelativistic Collinear Antiferromagnetism. Physical Review Letters, 126(12). https://doi.org/10.1103/PhysRevLett.126.127701

MLA:

Gonzalez-Hernandez, Rafael, et al. "Efficient Electrical Spin Splitter Based on Nonrelativistic Collinear Antiferromagnetism." Physical Review Letters 126.12 (2021).

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