ELECTRON WAVE-PACKET RESPONSE OF ABOVE-ALL-BAND-EDGES SEMICONDUCTOR QUANTUM RESONANT STRUCTURES

The time-dependent behavior of above-all-band-edges resonant propagating structures is presented. The results obtained are compared to those for the extensively studied double-barrier resonant tunneling structure for reference. It was found that for structures with the same resonant energies and resonance widths, the time-dependent characteristics are very similar. The structures were compared using two analytic approaches. The first is based on linear systems theory and the second on a finite-differences approach. It was found that for both structures, the quasibound state builds up at a rate determined by the parameters of the incident packet and decays with a time constant which corresponds to the lifetime.