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arXiv · 1611.00100

Spin-Mechanical Inertia in Antiferromagnet

Ran Cheng·Xiaochuan Wu·Di Xiao
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Abstract

Angular momentum conservation has served as a guiding principle in the interplay between spin dynamics and mechanical rotations. However, in an antiferromagnet with vanishing magnetization, new fundamental rules are required to properly describe spin-mechanical phenomena. Here we show that the N\'eel order dynamics affects the mechanical motion of a rigid body by modifying its inertia tensor in the presence of strong magnetocrystalline anisotropy. This effect depends on temperature when magnon excitations are considered. Such a spin-mechanical inertia can produce measurable consequences at small scales.

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Ran Cheng, Xiaochuan Wu, Di Xiao. 2016-11-01. Spin-Mechanical Inertia in Antiferromagnet. https://doi.org/10.1103/physrevb.96.054409

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