Cluster multipole dynamics in non-collinear antiferromagnets

Abstract

A systematic framework to investigate spin dynamics in non-collinear antiferromagnet is proposed. Taking Mn${}_3$Sn as a representative example, we derive an effective low energy model based on the multipole expansion of the magnetic structure, and investigate the uniform precession and the domain wall dynamics. We show that the solution for the effective model accurately reproduces the numerical calculation of the Landau-Lifshitz-Gilbert equations. Our results indicate that Mn${}_3$Sn has preferable properties for applications to a racetrack memory and a spin torque oscillator, and thus, is a promising candidate for new devices by using the multipole degrees of freedom.

5 pages, 4 figures

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Cited by in corpus (12)

• Electrical Manipulation of a Topological Antiferromagnetic State
• Spontaneous topological Hall effect induced by non-coplanar antiferromagnetic order in intercalated van der Waals materials
• Giant effective damping of octupole oscillation in an antiferromagnetic Weyl semimetal
• Non-Collinear Spin Current for Switching of Chiral Magnetic Textures
• Benchmark for Ab Initio Prediction of Magnetic Structures based on Cluster-Multipole Theory
• Higher order exchange driven noncoplanar magnetic state and large anomalous Hall effects in electron doped kagome magnet Mn${}_3$Sn
• Quantum-classical approach to spin and charge pumping and the ensuing radiation in THz spintronics: Example of ultrafast-light-driven Weyl antiferromagnet Mn${}_3$Sn
• Magnetic parity violation and parity-time-reversal-symmetric magnets
• Magnetic Phase Diagram of Mn3+xSn1-x Epitaxial Thin Films: Extending the Anomalous Hall Effect to Low Temperatures via Intrinsic Alloying
• Metallic layered materials with magnetic frustration: An ARPES view of the SmAuAl${}_4$Ge${}_2$ and TbAuAl${}_4$Ge${}_2$
• Micromagnetic simulations for magnetic multipoles
• Fermi arcs around magnetic domain walls in a compensated ferrimagnetic Weyl semimetal Ti${}_2$MnAl