  We report on depinning of nearly-commensurate charge-density waves in 1T-TaS2
thin-films at room temperature. A combination of the differential
current-voltage measurements with the low-frequency noise spectroscopy provide
unambiguous means for detecting the depinning threshold field in quasi-2D
materials. The depinning process in 1T-TaS2 is not accompanied by an observable
abrupt increase in electric current - in striking contrast to depinning in the
conventional charge-density-wave materials with quasi-1D crystal structure. We
explained it by the fact that the current density from the charge-density waves
in the 1T-TaS2 devices is orders of magnitude smaller than the current density
of the free carriers available in the discommensuration network surrounding the
commensurate charge-density-wave islands. The depinning fields in 1T-TaS2
thin-film devices are several orders of magnitude larger than those in quasi-1D
van der Waals materials. Obtained results are important for the proposed
applications of the charge-density-wave devices in electronics.
