Two dimensional (2D) materials have received a surge in research interest due to their exciting range of properties. Here we show that 2D cobalt telluride (Co2Te3), successfully synthesized via liquid-phase exfoliation in an organic solvent, exhibits weak ferromagnetism and semiconducting behavior at room temperature. The magnetic field-dependent piezoelectric properties of 2D Co2Te3 sample show magneto-electric response of the material and a linear relationship between the output voltage and applied magnetic field. First-principles density functional theory (DFT) and ab initio molecular dynamics are used to explain these experimental results. Our work could pave the way for the development of 2D materials with coupled magnetism and piezoelectricity, leading to new applications in electromagnetics.
@article{arxiv.2109.02781,
title = {Magnetic Field Dependent Piezoelectricity in Atomically Thin Co$_2$Te$_3$},
author = {Solomon Demiss and Alexey Karstev and Mithun Palit and Prafull Pandey and G. P Das and Olu Emmanuel Femi and Ajit K. Roy and Partha Kumbhakar and Pulickel M. Ajayan and Chandra Sekhar Tiwary},
journal= {arXiv preprint arXiv:2109.02781},
year = {2021}
}