Prediction of electrically induced magnetic reconstruction at the manganite/ferroelectric interface

By J. Burton, E. Tsymbal. 2009

168 citations recorded by the source corpus.

The control of magnetization via the application of an electric field, known as magnetoelectric coupling, is among the most fascinating and active research areas today. In addition to fundamental scientific interest, magnetoelectric effects may lead to new device concepts for data storage and processing. There are several known mechanisms for magnetoelectric coupling that include intrinsic effects in single-phase materials, strain-induced coupling in two-phase composites, and electronically driven effects at interfaces. Here we explore a different type of magnetoelectric effect at a ferromagnetic-ferroelectric interface: magnetic reconstruction induced by switching of electric polarization. We demonstrate this effect using first-principles calculations of a ${\text{La}}_{1\ensuremath{-}x}{A}_{x}{\text{MnO}}_{3}/{\text{BaTiO}}_{3}$ (001) interface, where $A$ is a divalent cation. By choosing the doping level $x$ to be near a transition between magnetic phases we show that the reversal of the ferroelectric polarization of ${\text{BaTiO}}_{3}$ leads to a change in the magnetic order at the interface from ferromagnetic to antiferromagnetic. This predicted electrically induced magnetic reconstruction at the interface represents a substantial interfacial magnetoelectric effect.

Subfields: Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/9c4c3c1c02bb62ff862ce3e7854a98bad5a68b90

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In Electronic, Optical and Magnetic Materials

1. S. May
2. A. Bhattacharya
3. Vincent Garcia
4. Manuel Bibes

In Materials Chemistry

1. Vincent Garcia
2. A. Bhattacharya
3. S. May
4. Manuel Bibes

Citations in the corpus

• Ferroelectric tunnel junctions for information storage and processing (2014, background): “Significant changes of the magnetic properties at the ferroelectric/metal interface can appear due to screening effects 58–61 , changes of the interface bonding 62–65 and changes of the interfacial magnetocrystalline anisotropy 66 .”
• Multiferroic materials and magnetoelectric physics: symmetry, entanglement, excitation, and topology (2015, unknown): “5MnO3/BaTiO3 heterostructures by the first-principles calculations [364].”
• Magnetic Oxide Heterostructures (2014, background): “Instead, this discrepancy suggested that the relative magnitudes of the exchange interactions are altered via electrostatic doping, for instance, weakening the FM (AF) exchange while enhancing AF (FM) interactions, an effect also captured in density functional theory studies of manganite/ferroelectr”