Spin battery operated by ferromagnetic resonance

TL;DR

This paper proposes using ferromagnetic resonance in precessing ferromagnets to generate a pure spin current, acting as a spin battery, and estimates the resulting spin current and bias for various materials.

Contribution

It introduces the concept of a spin battery driven by ferromagnetic resonance and provides estimates for spin currents across different material combinations.

Findings

Precessing ferromagnets can inject spin currents into conductors.

A pure spin source can be created via ferromagnetic resonance.

Estimates of spin current and bias vary with material combinations.

Abstract

Precessing ferromagnets are predicted to inject a spin current into adjacent conductors via Ohmic contacts, irrespective of a conductance mismatch with, for example, doped semiconductors. This opens the way to create a pure spin source spin battery by the ferromagnetic resonance. We estimate the spin current and spin bias for different material combinations.