Engineering charge ordering into multiferroicity

Abstract

Multiferroic materials have attracted great interests but are rare in nature. In many transitional metal oxides, charge ordering and magnetic ordering coexist, so that a method of engineering charge-ordered materials into ferroelectric materials would lead to a large class of multiferroic materials. We propose a strategy for designing new ferroelectric or even multiferroic materials by inserting a spacing layer into each two layers of charge-ordered materials and artificially making a superlattice. One example of the model demonstrated here is the perovskite (LaFeO${}_3$)${}_2$/LaTiO${}_3$ (111) superlattice, in which the LaTiO${}_3$ layer acts as the donor and the spacing layer, and the LaFeO${}_3$ layer is half doped and performs charge ordering. The collaboration of the charge ordering and the spacing layer breaks the space inversion symmetry, resulting in a large ferroelectric polarization. As the charge ordering also leads to a ferrimagnetic structure, the (LaFeO${}_3$)${}_2$/LaTiO${}_3$ is multiferroic. It is expected that this work can encourage the designing and experimentally implementation of a large class of multiferroic structures with novel properties.

References in corpus (15)

• Wannier90: A Tool for Obtaining Maximally-Localised Wannier Functions
• First-principles study of spontaneous polarization in multiferroic BiFeO${}_3$
• Multiferroicity due to charge ordering
• Octahedral rotation-induced ferroelectricity in cation ordered perovskites
• Turning ABO${}_3$ antiferroelectrics into ferroelectrics: Design rules for practical rotation-driven ferroelectricity in double perovskites and A${}_3$B${}_2$O${}_7$ Ruddlesden-Popper compounds
• Emergent properties hidden in plane view: Strong electronic correlations at oxide interfaces
• The ferroelectric Mott-Hubbard phase of organic (TMTTF)2X conductors
• Maximally localized Wannier functions in LaMnO3 within PBE+U, hybrid functionals, and partially self-consistent GW: an efficient route to construct ab-initio tight-binding parameters for e_g perovskites
• Engineered Mott ground state in LaTiO${}_{3+\delta }$/LaNiO${}_3$ heterostructure
• Interplay of octahedral rotations and breathing distortions in charge ordering perovskite oxides
• Electronic reconstruction at the isopolar LaTiO3/LaFeO3 interface: An x-ray photoemission and density functional theory study
• Epitaxial growth of (111)-oriented LaAlO${}_3$/LaNiO${}_3$ ultra-thin superlattices
• Mott Electrons in an Artificial Graphenelike Crystal of Rare-Earth Nickelate
• Charge transfer and hybrid ferroelectricity in (YFeO${}_3$)${}_n$/(YTiO${}_3$)${}_n$ magnetic superlattices
• Low-Temperature Structure of the Quarter-Filled Ladder Compound alpha'-NaV2O5

Cited by in corpus (4)

• Band alignment and charge transfer in complex oxide interfaces
• Charge-order-induced ferroelectricity in LaVO${}_3$/SrVO${}_3$ superlattices
• (LaTiO${}_3$)${}_n$/(LaVO${}_3$)${}_n$ as a model system for unconventional charge transfer and polar metallicity
• Strain-engineered high-temperature ferromagnetic Oxygen-substituted NaMnF3 from first principles