Dynamics of Einstein - de Haas Effect: Application to Magnetic Cantilever

TL;DR

This paper develops a local time-dependent theoretical framework for the Einstein - de Haas effect, linking microscopic spin interactions with elastic deformations, and applies it to analyze magnetic cantilever dynamics, comparing results with recent experiments.

Contribution

It introduces a novel microscopic dynamical theory for the Einstein - de Haas effect and applies it to magnetic cantilever motion, bridging theory and recent experimental observations.

Findings

The theory accurately describes cantilever motion due to spin-induced twists.

Comparison with experiments validates the theoretical approach.

Provides insights into spin-elastic coupling dynamics.

Abstract

Local time-dependent theory of Einstein - de Haas effect is developed. We begin with microscopicinteractions and derive dynamical equations that couple elastic deformations with internal twists due to spins. The theory is applied to the description of the motion of a magnetic cantilever caused by the oscillation of the domain wall. Theoretical results are compared with a recent experiment on Einstein - de Haas effect in a microcantilever.