Intrinsic spin currents in ferromagnets

Abstract

First principles calculations show that electric fields applied to ferromagnets generate spin currents flowing perpendicularly to the electric field. Reduced symmetry in these ferromagnets enables a wide variety of such spin currents. However, the total spin current is approximately the sum of a magnetization-independent spin Hall current and an anisotropic spin anomalous Hall current. Intrinsic spin currents are not subject to dephasing, enabling their spin polarizations to be misaligned with the magnetization, which enables the magnetization-independent spin Hall effect. The spin Hall conductivity and spin anomalous Hall conductivities of transition metal ferromagnets are comparable to those found in heavy metals, opening new avenues for efficient spin current generation in spintronic devices.

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• Independence of the inverse spin Hall effect with the magnetic phase in thin NiCu films
• Spin anomalous-Hall unidirectional magnetoresistance
• Controllable Spin Current in van der Waals Ferromagnet Fe3GeTe2
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• Resonant Measurement of Non-Reorientable Spin-Orbit Torque from a Ferromagnetic Source Layer Accounting for Dynamic Spin Pumping
• Theoretical Study of Extrinsic Spin-current Generation in Ferromagnets Induced by Anisotropic Spin-flip Scattering
• Theoretical study of orbital torque: Dependence on ferromagnet species and nonmagnetic layer thickness
• First-principles calculations of spin-orbit torques in Mn${}_2$Au/heavy-metal bilayers
• Spin-Orbit Torque in a Single Ferromagnetic Layer with Large Spin-Orbit Coupling
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• Measuring the magnetic anisotropy of the spin Hall effect and spin relaxation length in nickel and permalloy via electrical spin injection
• Tunable spin-charge conversion in class-I topological Dirac semimetals
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• Theory of magnetic spin and orbital Hall and Nernst effects in bulk ferromagnets
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