Meta-screening and permanence of polar distortion in metallized ferroelectrics
H. J. Zhao, A. Filippetti, C. Escorihuela-Sayalero, P. Delugas, E. Canadell, L. Bellaiche, V. Fiorentini, and J. Íñiguez
Physical Review B, vol. 97, no. 5, p. 054107, 2018
doi:10.1103/PhysRevB.97.054107