Figure 2: Transport along charged walls.
From: Injection and controlled motion of conducting domain walls in improper ferroelectric Cu-Cl boracite
(a) Spatially resolved current map captured with −12 Vdc applied to the bottom electrode. The bulk background signal (order of 0.1 pA) has been removed to enhance wall-specific contrast. The scale bar measures 2 μm. (b) Schematic of polar domain structure with 90° head-to-head and tail-to-tail charged boundaries coloured in blue and red respectively. Uncharged 180° walls are indicated as grey lines. (c) Current line-sections taken across the conducting and insulating walls seen in a. The conducting wall line profile (red) is taken across the dashed line path a to b in b while the insulating wall profile is taken along the path c to d.
