Abstract
The static and dynamic properties of the pinned charge-density-wave (CDW) is studied in the blue bronze, K 0.3MoO 3. High pressure suppresses the CDW order parameter and simultaneously the pinning energy decreases. Their relation favours weak pinning theories. The condensate may resonate around the equilibrium position but it can also be excited at low frequencies if screening by normal carriers allows internal deformations. The latter phason mode freezes out at low temperatures. This process is investigated by dielectric measurements.
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