Berry-phase effects and electronic dynamics in noncollinear antiferromagnetic texture

Abstract

Antiferromagnets (AFMs), in contrast to ferromagnets, show a nontrivial magnetic structure with zero net magnetization. However, they share a number of spintronic effects with ferromagnets, including spin-pumping and spin transfer torques. Both phenomena stem from the coupled dynamics of free carriers and localized magnetic moments. In the present paper I study the adiabatic dynamics of a spin-polarized electrons in a metallic AFM exhibiting a noncollinear 120${}^{\circ }$ magnetic structure. I show that the slowly varying AFM spin texture produces a non-Abelian gauge potential related to the time/space gradients of the Néel vectors. Corresponding emergent electric and magnetic fields induce rotation of spin and influence the orbital dynamics of free electrons. I discuss both the possibility of a topological spin Hall effect in the vicinity of topological AFM solitons with nonzero curvature and rotation of the electron spin traveling through the AFM domain wall.

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Cited by in corpus (20)

• Antiferromagnetic spintronics
• Beyond skyrmions: Review and perspectives of alternative magnetic quasiparticles
• Topological spin Hall effect in antiferromagnetic skyrmions
• Anomalous Hall effect in the noncollinear antiferromagnet Mn5Si3
• Prototypical topological orbital ferromagnet $\gamma$-FeMn
• Switching of a large anomalous Hall effect between metamagnetic phases of a non-collinear antiferromagnet
• Room temperature tetragonal noncollinear antiferromagnet Pt${}_2$MnGa
• Gradual pressure-induced change in the magnetic structure of the non-collinear antiferromagnet Mn${}_3$Ge
• Manipulating Anomalous Hall Antiferromagnets with Magnetic Fields
• Magneto-optic and transverse transport properties of non-collinear antiferromagnets
• Magnon-polaron excitations in the noncollinear antiferromagnet Mn${}_3$Ge
• Electric voltage generation by antiferromagnetic dynamics
• Soliton-like magnetization textures in non-collinear antiferromagnets
• Phase transitions associated with magnetic-field induced topological orbital momenta in a non-collinear antiferromagnet
• Crossover from Diffusive to Superfluid Transport in Frustrated Magnets
• Spin-motive force due to domain wall motion in the presence of Dzyaloshinskii-Moriya Interaction
• Chirality-induced linear response properties in non-coplanar Mn${}_3$Ge
• Optimization of reactively sputtered Mn3GaN films based on resistivity measurements
• Emergent impedance due to antiferromagnetic domain wall dynamics
• Hall mass and transverse Noether spin currents in noncollinear antiferromagnets