Fig. 7: Conductance of DWs.
From: Emergent properties at oxide interfaces controlled by ferroelectric polarization
a, b Free-carrier densities in PbTiO3 for the domain wall in the (a) H–H structure and (b) T–T structure. Reproduced with permission from ref. 136. Copyright [2020] {American Physical Society}. c A schematic representation of the interaction triangle between oxygen vacancy, HH (head-to-head) wall, TT (tail-to-tail) wall. Reproduced with permission from ref. 137. Copyright [2018] {Elsevier}. d Model for the charge-carrier distribution of excess electrons (e−), holes (h+), and the electronic potential (V), at DWs. e–g The density of states (DOS) of the 71° DW system (gray) and the charge-neutral monodomain system (black) projected on the atomic layers. e Charge-neutral DW. f DW with electrons. g DW with holes. d–g From Sabine Körbel et al. Panels d, g are reproduced with permission from ref. 115. Copyright [2018] {American Physical Society}.
