Ferroelectricity and chirality in the Pb${}_5$Ge${}_3$O${}_{11}$ crystal

Mauro Fava, William Lafargue-Dit-Hauret, Aldo H. Romero +1

We study from first-principles calculations the ferroelectric structural phase transition of Pb${}_5$Ge${}_3$O${}_{11}$ crystal. The calculations of phonons and Born effective charges of…