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Lamellar fluctuations melt ferroelectricity
(2023)
We consider a standard Ginzburg-Landau model of a ferroelectric whose electrical polarization
is coupled to gradients of elastic strain [1–4]. At the harmonic level, such flexoelectric interaction
is known to hybridize ...
Pressure dependence of ferroelectric quantum critical fluctuation
(2019-12-13)
Phase transitions to a long-range-ordered state driven by a softened phonon mode are ubiquitous across condensed matter physics, but the evolution of such a mode as the system is tuned to or from the transition has never ...
Negative thermal expansion near two structural quantum phase transitions Connor
(2017-12-18)
Recent experimental work has revealed that the unusually strong, isotropic structural negative thermal
expansion in cubic perovskite ionic insulator ScF3 occurs in excited states above a ground state tuned very near a ...