Ferroelectric HfO2's coercive field is predicted to scale as thickness^{-1/2}, weaker than the classical JKD exponent, due to domain growth confined to single polar layers.
Scale-free ferroelectricity induced by flat phonon bands in HfO 2,
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Thickness Dependence of Coercive Field in Ferroelectric Doped-Hafnium Oxide
Ferroelectric HfO2's coercive field is predicted to scale as thickness^{-1/2}, weaker than the classical JKD exponent, due to domain growth confined to single polar layers.