Numerical based study on charge density wave dynamics in a one-dimensional conductor in the low temperature limit

Publication date: March 2019Source: Results in Physics, Volume 12Author(s): R. Essajai, O. Idrissi, A. Mortadi, N. Hassanain, A. MzerdAbstractUnderstanding how the temperature affects in a wide range of quasi-one-dimensional conductors is one of the most significant scientific challenges in solid state physics. In this paper, the temperature-dependent charge density wave (CDW) dynamic properties of a one-dimensional conductor in the weak pinning limit was studied within the temperature limit of 0–1 K. To do so, a model which incorporates the essential feature of the Fukuyama–Lee–Rice (FLR) model of CDW’s has been considered The simulation results have shown that the threshold field and nonlinear excess current exhibit non-monotonous behavior as a function of the temperature. The mechanisms leading to this finding is interpreted in terms of several phenomena like thermal softening, damping mechanisms of the collective mode as well as the generation of the CDW dislocation. Besides, it was found that the CDW phase profile variations are more pronounced when the temperature increases. This finding was discussed in the context of thermal softening behavior.

Source: Results in Physics - February 8, 2019 Category: Physics Source Type: research