Field-free, spin-current control of magnetization in non-collinear chiral antiferromagnets

Abstract

Non-collinear chiral antiferromagnets like Mn3Sn and Mn3Ge are known to show gigantic anomalous Hall response depending on the orientation of their inverse chiral magnetic order of Mn atoms in Kagome layers. Here we study the stability of such magnetic order in the absence of external magnetic fields on the basis of stochastic Landau-Lifshitz-Gilbert equation for a simplified two-dimensional model of these materials. We find that even without external magnetic fields, the ordered state is, once formed, highly stable against thermal fluctuations. Moreover, we show that if Mn spins are well confined inside each Kagome layers, by injecting spin-current using spin-filtering effect of ferromagnetic metals, we can control the in-plane magnetic structure in a field free way.

5 pages, 4 figures

References in corpus (4)

• Matching domain wall configuration and spin-orbit torques for very efficient domain-wall motion
• Non-collinear Antiferromagnets and the Anomalous Hall Effect
• Giant magnetic anisotropy of the bulk antiferromagnets IrMn and IrMn3
• Realization of the thermal equilibrium in inhomogeneous magnetic systems by the Landau-Lifshitz-Gilbert equation with stochastic noise, and its dynamical aspects

Cited by in corpus (13)

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• Anomalous Hall Conductivity of a Non-Collinear Magnetic Antiperovskite
• Antiferromagnetic Tunnel Junctions for Spintronics
• Route Towards Dirac and Weyl Antiferromagnetic Spintronics
• Magnetization switching in polycrystalline Mn3Sn thin film induced by self-generated spin-polarized current
• Time-dependent multistate switching of topological antiferromagnetic order in Mn${}_3$Sn
• Gradual pressure-induced change in the magnetic structure of the non-collinear antiferromagnet Mn${}_3$Ge
• Transport Spin Polarization of Noncollinear Antiferromagnetic Antiperovskites
• Spin-Torque-driven Terahertz Auto Oscillations in Non-Collinear Coplanar Antiferromagnets
• Cluster multipole dynamics in non-collinear antiferromagnets
• Structural and electronic properties of the spin-filter material CrVTiAl with disorder
• Interfacial Dzyaloshinskii-Moriya interaction in nonmagnetic/noncollinear-antiferromagnetic bilayers