Microscopic approach to the description of spin torques in two-dimensional Rashba ferromagnets and antiferromagnets

We review the most significant results obtained in the framework of the microscopic approach to a systematic study of magnetic dynamics in two-dimensional ferromagnetic and antiferromagnetic materials with a strong Rashba spin-orbit coupling. For model systems, we discuss the microscopic derivation of the Gilbert damping tensor, spin-orbit and spin-transfer torques, and symmetric and antisymmetric exchange interactions. It is shown that in both antiferromagnetic and ferromagnetic systems, the presence of a sufficiently strong spin-orbit coupling leads to an anisotropy of spin torques and Gilbert damping. We focus on an analysis of spin-orbit torques in a two-dimensional Rashba antiferromagnet. We also address the possibility of switching the antiferromagnetic order parameter via short current pulses in the plane of the sample.

Keywords: ferromagnet, antiferromagnet, spin-orbit coupling, Dzyaloshinskii—Moriya interaction, spin-transfer torque, spin-orbit torque, Gilbert damping
PACS: 75.10.−b, 75.30.−m, 75.40.Cx, 75.50.Ee (all)
DOI: 10.3367/UFNe.2021.04.038964
URL: https://ufn.ru/en/articles/2022/3/a/
Web of Science

000834747900001
Scopus

2-s2.0-85131135379
ADS NASA

2022PhyU...65..215P
Citation: Pervishko A A, Yudin D I "Microscopic approach to the description of spin torques in two-dimensional Rashba ferromagnets and antiferromagnets" Phys. Usp. 65 215–226 (2022)

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Received: 14th, November 2020, revised: 7th, April 2021, accepted: 7th, April 2021

Оригинал: Первишко А А, Юдин Д И «Микроскопический подход к описанию спиновых моментов в двумерных анти- и ферромагнетиках Рашбы» УФН 192 233–246 (2022); DOI: 10.3367/UFNr.2021.04.038964

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