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.

References in corpus (5)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Dissipationless Quantum Spin Current at Room Temperature
• First Principles Calculation of Anomalous Hall Conductivity in Ferromagnetic bcc Fe
• Study of Intrinsic Spin Hall Effect and Orbital Hall Effect in 4d- and 5d- Transition Metals
• Spin Injection and Detection via the Anomalous Spin Hall Effect in a Ferromagnetic Metal

Cited by in corpus (1)

• Spin-Orbit Torque in a Single Ferromagnetic Layer with Large Spin-Orbit Coupling