Nanomechanical resonances of two-dimensional (2D) materials are sensitive probes for condensed-matter physics, offering new insights into magnetic and electronic phase transitions. Despite extensive research, the influence of the spin dynamics near a second-order phase transition on the nonlinear dynamics of 2D membranes has remained largely unexplored. Here, we investigate nonlinear magneto-mechanical coupling to antiferromagnetic order in suspended FePS3-based heterostructure membranes. By monitoring the motion of these membranes as a function of temperature, we observe characteristic features in both nonlinear stiffness and damping close to the N\'{e}el temperature TN. We account for these experimental observations with an analytical magnetostriction model in which these nonlinearities emerge from a coupling between mechanical and magnetic oscillations, demonstrating that magneto-elasticity can lead to nonlinear damping. Our findings thus provide insights into the thermodynamics and magneto-mechanical energy dissipation mechanisms in nanomechanical resonators due to the material's phase change and magnetic order relaxation.
@article{arxiv.2309.09672,
title = {Nonlinear dynamics and magneto-elasticity of nanodrums near the phase transition},
author = {Makars Šiškins and Ata Keşkekler and Maurits J. A. Houmes and Samuel Mañas-Valero and Eugenio Coronado and Yaroslav M. Blanter and Herre S. J. van der Zant and Peter G. Steeneken and Farbod Alijani},
journal= {arXiv preprint arXiv:2309.09672},
year = {2023}
}