Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2009-01-08
Physics
Condensed Matter
Other Condensed Matter
Scientific paper
We examine phenomenon of electromagnetic transparency in semiconductor superlattices (having various miniband dispersion laws) in the presence of multi-frequency periodic and non-periodic electric fields. Effects of induced transparency and spontaneous generation of static fields are discussed. We paid a special attention on a self-induced electromagnetic transparency and its correlation to dynamic electron localization. Processes and mechanisms of the transparency formation, collapse, and stabilization in the presence of external fields are studied. In particular, we present the numerical results of the time evolution of the superlattice current in an external biharmonic field showing main channels of transparency collapse and its partial stabilization in the case of low electron density superlattices.
Mourokh Lev G.
Romanov Yu. A.
Romanova Julia Yu.
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