Laser-induced torques in metallic antiferromagnets
Freimuth F, Bluegel S, Mokrousov Y (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 103
Article Number: 174429
Journal Issue: 17
DOI: 10.1103/PhysRevB.103.174429
Abstract
We study laser-induced torques in the antiferromagnet Mn2Au. We find that even linearly polarized light may induce laser-induced torques in Mn2Au; that is, the light does not have to be circularly polarized. The laser-induced torques in Mn2Au are comparable in magnitude to those in the ferromagnets Fe, Co, and FePt at optical frequencies. We also compute the laser-induced torques at terahertz (THz) frequencies and compare them to the spin-orbit torques (SOTs) excited by THz laser pulses. We find the SOTs are dominant at THz frequencies for the laser-field strengths used in experiments. Additionally, we show that the matrix elements of the spin-orbit interaction (SOI) can be used to add SOI only during the Wannier interpolation, which we call Wannier interpolation of SOI. This technique allows us to perform the Wannier interpolation conveniently for many magnetization directions from a single set of Wannier functions.
Involved external institutions
Germany (DE)How to cite
APA:
Freimuth, F., Bluegel, S., & Mokrousov, Y. (2021). Laser-induced torques in metallic antiferromagnets. Physical Review B, 103(17). https://doi.org/10.1103/PhysRevB.103.174429
MLA:
Freimuth, Frank, Stefan Bluegel, and Yuriy Mokrousov. "Laser-induced torques in metallic antiferromagnets." Physical Review B 103.17 (2021).
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