Fig. 6

Simulation of the electric field distribution at breakdown voltage of samples A–C (a, c, e), the magnified image of selected regions in dashed box (b, d, f, g), the simulated electric field vs the position along the dashed line in (b, d, f) for three samples, Au/Ni/β-Ga₂O₃ interface for sample A, 50 nm below the interface for samples B and C, respectively. The maximum field is 5.05 MV/cm