Suppression of Gunn oscillations by a two-dimensional effect

Suppression of Gunn oscillations in thin-film Gunn diodes by a two-dimensional effect is described theoretically and experimentally. Experiments show that Gunn oscillations do not occur in diodes whose nt product is less than 1.1 × 10¹¹(cm^-2), where t is the film thickness. This stabilized sample is useful for amplifiers.