Soliton excitation in superlattice

Abstract

Excitation of soliton in superlattice has been investigated theoretically. It is noted that the soliton velocity u and the length L depend on the amplitude Eo and that an increase in the amplitude causes soliton width L to approach zero and the velocity u to that of light V in homogeneous medium. The characteristic parameters of soliton u, L and Eo are related by expression j^r = |^ which is constant depending only on the SL period d. It is observed also that the soliton has both energy E — 8V2 (1 — -^J and momentum P = ^ E which makes it behave as relativistic free particle with rest energy 2. Its interaction with electrons can cause the soliton electric effect in SL