Volume 72, Number 3, November 2005
|Page(s)||444 - 450|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||30 September 2005|
Hysteresis and noise in stripe- and clump-forming systems
Center for Nonlinear Studies and Theoretical Division, Los Alamos National Laboratory Los Alamos, NM 87545, USA
Accepted: 8 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 α 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.
PACS: 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
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