Non-Collinear Spin Current for Switching of Chiral Magnetic Textures

Abstract

We propose a concept of non-collinear spin current, whose spin polarization varies in space even in non-magnetic crystals. While it is commonly assumed that the spin polarization of the spin Hall current is uniform, asymmetric local crystal potential generally allows the spin polarization to be non-collinear in space. Based on microscopic considerations we demonstrate that such non-collinear spin Hall currents can be observed for example in layered Kagome Mn${}_3$X (X = Ge, Sn) compounds. Moreover, by referring to atomistic spin dynamics simulations we show that non-collinear spin currents can be used to switch the chiral spin texture of Mn${}_3$X in a deterministic way even in the absence of an external magnetic field. Our theoretical prediction can be readily tested in experiments, which will open a novel route toward electric control of complex spin structures in non-collinear antiferromagnets.

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Cited by in corpus (11)

• Néel Spin Currents in Antiferromagnets
• Antiferromagnetic Tunnel Junctions for Spintronics
• Magnetization switching in polycrystalline Mn3Sn thin film induced by self-generated spin-polarized current
• Spin-Polarized Antiferromagnetic Spintronics
• Order parameter dynamics in Mn${}_3$Sn driven by DC and pulsed spin-orbit torques
• Magnetic parity violation and parity-time-reversal-symmetric magnets
• Topological magnon in exchange frustration driven incommensurate spin spiral of a kagome lattice YMn${}_6$Sn${}_6$
• Voltage-Controlled High-Bandwidth Terahertz Oscillators Based On Antiferromagnets
• Tuning the Hall response of a noncollinear antiferromagnet via spin-transfer torques and oscillating magnetic fields
• Electrically Tunable Picosecond-scale Octupole Fluctuations in Chiral Antiferromagnets
• Threshold current of field-free perpendicular magnetization switching using anomalous spin-orbit torque