Magnetoelectro-elastic control of magnetism in an artificial multiferroic

Autor: Heidler, J., Fechner, M., Chopdekar, R. V., Piamonteze, C., Dreiser, J., Jenkins, C. A., Rusponi, S., Brune, H., Spaldin, N. A., Nolting, F.
Rok vydání: 2015
Předmět:
Zdroj: Phys. Rev. B 94, 014401 (2016)
Druh dokumentu: Working Paper
DOI: 10.1103/PhysRevB.94.014401
Popis: 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.
Databáze: arXiv