Tunable strong coupling of mechanical resonance between spatially separated FePS$_3$ nanodrums

TL;DR

This paper demonstrates tunable strong mechanical coupling between two spatially separated FePS$_3$ nanodrums, controlled via gate voltage, enabling data transfer and insights into magnetic phase transition effects.

Contribution

It introduces a tunable electromechanical coupling mechanism for magnetic 2D membranes, allowing control over resonance and coupling strength, with potential for low-power information processing.

Findings

Achieved strong, tunable coupling between FePS$_3$ nanodrums

Demonstrated data transfer via amplitude modulation

Studied temperature effects related to antiferromagnetic transition

Abstract

Coupled nanomechanical resonators made of two-dimensional materials are promising for processing information with mechanical modes. However, the challenge for these types of systems is to control the coupling. Here, we demonstrate strong coupling of motion between two suspended membranes of the magnetic 2D material FePS$_3$. We describe a tunable electromechanical mechanism for control over both the resonance frequency and the coupling strength using a gate voltage electrode under each membrane. We show that the coupling can be utilized for transferring data from one drum to the other by amplitude modulation. Finally, we also study the temperature dependence of the coupling, and in particular how it is affected by the antiferromagnetic phase transition characteristic of this material. The presented electrical coupling of resonant magnetic 2D membranes holds promise of transferring mechanical energy over a distance at low electrical power, thus enabling novel data readout and information processing technologies.