Erratum: “Thickness-driven antiferroelectric-to-ferroelectric phase transition of thin $PbZrO3$ layers in epitaxial $PbZrO3∕PbZr0.8Ti0.2O3$ multilayers” [Appl. Phys. Lett. 91, 122915 (2007)]

In the last paragraph (conclusion section) of the above-mentioned letter, the first sentence should read as follows: “In conclusion, a thickness-driven antiferroelectric-to-ferroelectric, orthorhombic-to-rhombohedral phase transition of the $PbZrO3$ layers in epitaxial antiferroelectric/ferroelectric $PbZrO3∕PbZr0.8Ti0.2O3$ multilayers has been observed at a $PbZrO3$ thickness below 10 nm.”, in accordance with the entire contents of the letter and the last but one sentence of the abstract.