Issue |
Europhys. Lett.
Volume 72, Number 3, November 2005
|
|
---|---|---|
Page(s) | 444 - 450 | |
Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
DOI | https://doi.org/10.1209/epl/i2005-10250-8 | |
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
Received:
25
July
2005
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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