Current oscillations or "narrow-band noise" peaks associated with nonlinear charge-density wave conduction in NbSe3 are studied in the presence of a thermal gradient. Multiple splitting of the spectral noise peaks are observed for both Peierls transitions, suggesting the formation of velocity-coherent regions having a minimum length of 100 μm. These results are consistent with narrow-band-noise models in which current oscillations result from bulk interaction between the sliding charge-density wave and the impurity pinning potential.
ASJC Scopus subject areas
- Condensed Matter Physics