Domain-wall engineering and topological defects in ferroelectric and ferroelastic materials
Ferroelectric and ferroelastic domain walls are 2D topological defects with thicknesses
approaching the unit cell level. When this spatial confinement is combined with observations …
approaching the unit cell level. When this spatial confinement is combined with observations …
Crackling noise and avalanches in minerals
EKH Salje, X Jiang - Physics and Chemistry of Minerals, 2021 - Springer
The non-smooth, jerky movements of microstructures under external forcing in minerals are
explained by avalanche theory in this review. External stress or internal deformations by …
explained by avalanche theory in this review. External stress or internal deformations by …
Quenched lattice fluctuations in optically driven SrTiO3
Crystal lattice fluctuations, which are known to influence phase transitions of quantum
materials in equilibrium, are also expected to determine the dynamics of light-induced phase …
materials in equilibrium, are also expected to determine the dynamics of light-induced phase …
Ferroelastic Twin-Wall-Mediated Ferroelectriclike Behavior and Bulk Photovoltaic Effect in
Ferroelastic twin walls in nonpolar materials can give rise to a spontaneous polarization due
to symmetry breaking. Nevertheless, the bistable polarity of twin walls and its reversal have …
to symmetry breaking. Nevertheless, the bistable polarity of twin walls and its reversal have …
Ferroic alternation in methylammonium lead triiodide perovskite
Methylammonium lead triiodide (MAPbI3) perovskite has attracted broad interest for solar
cells, light‐emitting diodes, and so forth. Experiments have captured that the alternative …
cells, light‐emitting diodes, and so forth. Experiments have captured that the alternative …
Avalanches in ferroelectric, ferroelastic and coelastic materials: Phase transition, domain switching and propagation
The motion of domain walls and phase fronts in ferroelectric and ferroelastic materials
displays discrete, impulsive jumps, ie jerks, as indicators of avalanches on a broad range of …
displays discrete, impulsive jumps, ie jerks, as indicators of avalanches on a broad range of …
Electrically driven ferroelastic domain walls, domain wall interactions, and moving needle domains
Ferroelastic domains generate polarity near domain walls via the flexoelectric effect. Applied
electric fields change the wall dipoles and generate additional dipoles in the bulk. Molecular …
electric fields change the wall dipoles and generate additional dipoles in the bulk. Molecular …
Ferroelectric switching in ferroelastic materials with rough surfaces
Electric switching of non-polar bulk crystals is shown to occur when domain walls are polar
in ferroelastic materials and when rough surfaces with steps on an atomic scale promote …
in ferroelastic materials and when rough surfaces with steps on an atomic scale promote …
Symmetry and three-dimensional anisotropy of polar domain boundaries observed in ferroelastic in the complete absence of ferroelectric instability
H Yokota, S Matsumoto, EKH Salje, Y Uesu - Physical Review B, 2018 - APS
The domain boundaries of ferroelastic LaAl O 3 (LAO) are examined using a nonlinear
optical second harmonic generation (SHG) microscope. Although bulk crystalline LAO …
optical second harmonic generation (SHG) microscope. Although bulk crystalline LAO …
Electric-field-induced avalanches and glassiness of mobile ferroelastic twin domains in cryogenic
Domain motion during ferroelectric switching has been recently suggested to follow scale-
invariant avalanche dynamics. An interesting question concerns the dynamics of ferroelastic …
invariant avalanche dynamics. An interesting question concerns the dynamics of ferroelastic …