Figure 7
From: Large and accessible conductivity of charged domain walls in lithium niobate

Finite-element simulation for the current density and the resistance in the case of a single domain wall: (a) The current density distribution for the wall length L = 1 mm, the crystal thickness d = 300 µm, and the top electrode length a = 10 µm. The current density is color-coded, and the red lines indicate the stream lines. (b) Stream lines near the top electrode. (c) Dependence of F on the ratio a/d for L = 1 mm.