Sub-nm2 ferroelectric domains via charged 180 degree walls in ZrO2

Nashrah Afroze, Hamoon Fahrvandi, Guodong Ren +31

Flat phonon bands in fluorite ferroelectrics (HfO2 or ZrO2) shrink polar domains laterally to an irreducible half-unit-cell width (0.27 nm) within which the vertical arrangement of…