Hysteresis and noise in stripe- and clump-forming systemsC. Reichhardt, C. J. Olson Reichhardt and A. R. Bishop
Center for Nonlinear Studies and Theoretical Division, Los Alamos National Laboratory Los Alamos, NM 87545, USA
received 25 July 2005; accepted 8 September 2005
published online 30 September 2005
We use simulations to examine hysteresis and noise in a model system that produces heterogeneous orderings including stripe and clump phases. In the presence of a disordered substrate, these heterogeneous phases exhibit noise and hysteresis in transport. The noise fluctuations are maximal in the heterogeneous phases, while in the uniform phases the hysteresis vanishes and both and the noise power decrease. We compare our results to recent experiments exhibiting noise and hysteresis in high-temperature superconductors where charge heterogeneities may occur.
74.25.-q - Properties of type I and type II superconductors.
72.70.+m - Noise processes and phenomena.
71.45.Lr - Charge-density-wave systems.
© EDP Sciences 2005