Sifuna, James; -Ferna´ndez, Pablo Garc´ıa; Manyali, George S.; George, Amolo; Junquera, Javier
(African school for Electronic Structure Methods and Applications (ASESMA), 2020-04-07)
We study from first-principles the structural and electronic properties of head-to-head (HH) and tail-to-tail (TT) 180◦ domain walls in isolated free-standing PbTiO3 slabs. For sufficiently thick domains (n = 16 unit cells ...