| Issue |
Europhys. Lett.
Volume 66, Number 3, May 2004
|
|
|---|---|---|
| Page(s) | 385 - 391 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2003-10217-9 | |
| Published online | 01 April 2004 | |
noise in a one-dimensional charge density wave system
1
Educational Physiology Laboratory, Graduate School of Education The University of Tokyo - 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
2
PRESTO, Japan Science and Technology Agency Kawaguchi, Saitama 332-0012, Japan
3
Institut für Theoretische Physik, Universität zu Köln Zülpicher Str. 77, 50937 Köln, Germany
4
Institute of Physics - Al. Lotnikow 32/46, 02-668 Warsaw, Poland
Received:
7
August
2003
Accepted:
26
March
2004
The current noise in a classical one-dimensional charge density
wave system is studied in the weak pinning regime by solving the
overdamped equation of motion numerically. At low temperatures and
just above the zero-temperature depinning threshold, the power
spectrum of the current noise 
was found to scale with
frequency f as 
, where 
, suggesting the existence of flicker noise. Our
result is in agreement with experimental findings for
quasi–one-dimensional charge density wave systems and provides
the first evidence of 
behavior obtained from first
principles.
PACS: 72.15.Nj – Collective modes (e.g., in one-dimensional conductors)
© EDP Sciences, 2004
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