Einstein-de Haas effect: a bridge linking mechanics, magnetism, and topology

TL;DR

The paper reviews the Einstein-de Haas effect, emphasizing its recent developments in topological magnon systems, microscopic mechanisms, and chirality-selective magnon-phonon coupling, with implications for spintronics and ultrafast magnetism.

Contribution

It introduces recent advancements in understanding the EdH effect, especially its realization in topological systems and novel coupling mechanisms, bridging mechanics, magnetism, and topology.

Findings

EdH effect linked to topological magnon systems

Chirality-selective magnon-phonon coupling identified

Potential applications in spintronics and ultrafast magnetism

Abstract

The Einstein-de Haas (EdH) effect is a fascinating phenomenon that links mechanics and magnetism. Despite being discovered over a century ago, it remains significant in contemporary science, particularly within the fields of spintronics and ultrafast magnetism. Recent predictions suggest that the EdH effect may be realized in topological magnon systems, potentially leading to even richer properties. In this perspective, we introduce recent advancements in the EdH effect and discuss its developments in three key aspects: the microscopic mechanism, its manifestation in topological systems, and chirality-selective magnon-phonon coupling. Our discussions aim to inspire further explorations of the EdH effect and highlight its promising applications in different areas.