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arXiv · 1509.03541

Magnetoelectro-elastic control of magnetism in an artificial multiferroic

J. Heidler·M. Fechner·R. V. Chopdekar·C. Piamonteze·J. Dreiser·C. A. Jenkins·S. Rusponi·H. Brune·N. A. Spaldin·F. Nolting
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Abstract

We study the coexistence of strain- and charge-mediated magnetoelectric coupling in a cobalt (0-7 nm) wedge on ferroelectric [Pb(Mg$_{1/3}$/Nb$_{2/3}$)O$_{3}$]$_{0.68}$-[PbTiO$_{3}$]$_{0.32}$ (011) using surface-sensitive x-ray magnetic circular dichroism spectroscopy at the Co L$_{3,2}$ 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.

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J. Heidler, M. Fechner, R. V. Chopdekar, C. Piamonteze, J. Dreiser, C. A. Jenkins, S. Rusponi, H. Brune, N. A. Spaldin, F. Nolting. 2015-09-11. Magnetoelectro-elastic control of magnetism in an artificial multiferroic. https://doi.org/10.1103/physrevb.94.014401

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