Sliding charge-density-wave in two-dimensional rare-earth tellurides

TL;DR

This paper reports the first observation of charge-density-wave sliding in two-dimensional rare-earth tellurides, specifically DyTe$_3$, demonstrating nonlinear transport and Shapiro steps below the CDW transition temperature.

Contribution

It provides the first experimental evidence of CDW sliding in 2D materials, expanding understanding of nonlinear transport phenomena in layered compounds.

Findings

Sharp increase in conductivity above threshold electric field

Observation of Shapiro steps under rf field

Confirmation of CDW sliding in 2D layered compound

Abstract

Nonlinear transport properties are reported in the layered DyTe$_3$ compound at temperature below the charge-density-wave (CDW) transition, $T_P=302$ K. Conductivity is increasing sharply above the threshold electric field. Under application of a rf field Shapiro steps are clearly observed. These features demonstrate for the first time CDW sliding in two-dimensional compounds.