Avalanche criticality in LaAlO[Formula: see text] and the effect of aspect ratio.

ABSTRACT: Ferroic domain dynamics, as a function of external stimuli, can be collectively described as scale-invariant avalanches characterised by a critical exponent that are sensitive to the complexity of the domain microstructure. The understanding and manipulation of these avalanches lies at the heart of developing novel applications such as neuromorphic computing. Here we combine in situ heating optical observations and mean-field analysis to investigate the collective domain behaviour in pure-ferroelastic lanthanum aluminate (LaAlO[Formula: see text]) as a function of aspect ratio, the ratio of sample length to width, where the movement of the domains is predominantly driven by thermal stresses via thermal expansion/contraction during heat cycling. Our observations demonstrate that the aspect

SUBMITTER: Scott JJR 

PROVIDER: S-EPMC9437108 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature