Multiplicative noise and charge density wave dynamics in Rb0.30MoO3

TL;DR

This study explores how multiplicative noise influences charge density wave dynamics in Rb0.30MoO3, revealing noise-induced modifications in pulse response and phase coherence.

Contribution

It introduces an analysis of multiplicative noise effects on CDW dynamics in Rb0.30MoO3, highlighting nonlinear conductivity and noise-induced phase coherence changes.

Findings

Average pulse amplitude decreases with noise perturbation.

Pulse amplitude exhibits non-monotonous behavior with increasing amplitude.

Enhanced phase coherence of CDW observed under noise influence.

Abstract

We have investigated the combined effects of a multiplicative noise and nonlinear conductivity on the charge density wave (CDW) dynamics of the quasi-one dimensional conductor Rb0.30MoO3. When the amplitude of a bipolar rectangular voltage pulse excitation is modulated by a multiplicative Gaussian white noise perturbation, the average pulse amplitude is smaller than the unperturbed one and shows a non monotonous behaviour when the pulse amplitude is increased. We analyze the transient response in terms of an increase of phase coherence of the charge-density-wave.