Universal emergence of spatially-modulated structures induced by flexo-antiferrodistortive coupling in multiferroics

Abstract

We proved the existence of a universal flexo-antiferrodistortive coupling as a necessary complement to the well-known flexoelectric coupling. The coupling is universal for all antiferrodistortive systems and can lead to the formation of incommensurate, spatially-modulated phases in multiferroics. Our analysis can provide a self-consistent mesoscopic explanation for a broad range of modulated domain structures observed experimentally in multiferroics.

38 pages, 3 figures, 4 tables, 6 appendices

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Cited by in corpus (17)

• Macroscopic Polarization from Antiferrodistortive Cycloids in Ferroelastic SrTiO${}_3$
• The influence of elastic strain gradient on the upper limit of flexocoupling strength, spatially-modulated phases and soft phonon dispersion in ferroics
• Flexocoupling impact on the generalized susceptibility and soft phonon modes in the ordered phase of ferroics
• Exploring physics of ferroelectric domain walls via Bayesian analysis of atomically resolved STEM data
• Rotomagnetic coupling in fine grained multiferroic BiFeO3: Theory and experiment
• Mapping gradient-driven morphological phase transition at the conductive domain walls of strained multiferroic films
• Flexocoupling induced soft acoustic mode and the spatially modulated phases in ferroelectrics
• Linear roto-antiferromagnetic effect in multiferroics: physical manifestations
• Observation of Kibble-Zurek behavior near the Lifshitz point in ferroelectrics with incommensurate phase
• Hidden Symmetry of Flexoelectric Coupling
• Melting of Spatially Modulated Phases in La-doped BiFeO3 at Surfaces and Surface-Domain Wall Junctions
• Coupled uncertainty provided by a multifractal random walker
• Flexocoupling-induced phonons and ferrons in van der Waals ferroelectrics
• Landau-Ginzburg theory of charge density wave formation accompanying lattice and electronic long-range ordering
• Flexoelectricity induced spatially modulated phases in ferroics and liquid crystals (Author review)
• The Influence of Electric Field on the Anisotropic Dispersion of the Flexocoupling Induced Phonons and Ferrons in Van der Waals Ferrielectrics
• Intrinsic structural instabilities of domain walls driven by gradient couplings: meandering anferrodistortive-ferroelectric domain walls in BiFeO3