We study the coexistence of strain- and charge-mediated magnetoelectric coupling in a cobalt (0-7 nm) wedge on ferroelectric [Pb(Mg1/3/Nb2/3)O3]0.68-[PbTiO3]0.32 (011) using surface-sensitive x-ray magnetic circular dichroism spectroscopy at the Co L3,2 edges. Three distinct electric field driven remanent magnetization states can be set in the Co film at room temperature. Ab-initio density functional theory calculations unravel the relative contributions of both strain and charge to the observed magnetic anisotropy changes illustrating magnetoelectro-elastic coupling at artificial multiferroic interfaces.
@article{arxiv.1509.03541,
title = {Magnetoelectro-elastic control of magnetism in an artificial multiferroic},
author = {J. Heidler and M. Fechner and R. V. Chopdekar and C. Piamonteze and J. Dreiser and C. A. Jenkins and S. Rusponi and H. Brune and N. A. Spaldin and F. Nolting},
journal= {arXiv preprint arXiv:1509.03541},
year = {2016}
}