Conduction properties of a new two-dimensional sliding charge-density wave

Abstract
The conduction properties of a two-dimensional array of electrons on a helium film supported by a dielectric substrate are reported. The system undergoes a metal-insulator transition at the melting point as substrate imperfections pin the lattice phase. The frequency and field dependence of the finite-frequency conductivity and the noise characteristics are analogous to those of sliding charge-density waves.