Nanomechanical probing and strain tuning of the Curie temperature in suspended Cr2Ge2Te6-based heterostructures

Abstract Two-dimensional magnetic materials with strong magnetostriction are attractive systems for realizing strain-tuning of the magnetization in spintronic and nanomagnetic devices. This requires an understanding magneto-mechanical coupling these materials. In this work, we suspend thin Cr 2 Ge Te 6 layers their heterostructures, creating ferromagnetic nanomechanical membrane resonators. We probe mechanical properties as a function temperature strain by observing magneto-elastic signatures temperature-dependent resonance frequency near Curie temperature, T C . compensate negative thermal expansion coefficient fabricating heterostructures WSe antiferromagnetic FePS 3 , which have positive coefficients. Thus demonstrate possibility probing multiple phase transitions single heterostructure. Finally, strain-induced enhancement suspended -based heterostructure 2.5 ± 0.6 K applying 0.026% via electrostatic force.