Impact ionization fronts in Si diodes: Numerical evidence of superfast propagation due to nonlocalized preionization

Pavel Rodin, Andrey Minarsky, Igor Grekhov

We present numerical evidence of a novel propagation mode for superfast impact ionization fronts in high-voltage Si $p^{+}$-$n$-$n^{+}$ structures. In nonlinear dynamics terms, this mo…