Abstract
We discuss the formation of a spatially coherent layered polaron superlattice in a dilute one-dimensional electron gas with strong Fr\"ohlich-type electron-phonon interaction and elastic interchain coupling. We consider the effect of both long- and short-range Coulomb repulsions and present results for the long-wavelength phason excitations of such a superstructure. Our results apply to doping-induced superstructures in quasi-one-dimensional semiconductors and to three-dimensional-discommensuration domain walls in incommensurate charge-density wave systems.
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