We have used the electro-optic response to search for critical divergence of the charge-density-wave (CDW) diffusion constant in blue bronze at the CDW depinning onset. No divergence is observed, setting (Vcrit / Von - 1) < 0.06 as a limit for the critical voltage. The measured diffusion constant implies an elastic constant consistent with the measured phason velocity, suggesting that CDW polarization involves gradual, rather than soliton-like, changes in phase.
|Number of pages||4|
|Journal||Physica B: Condensed Matter|
|State||Published - 2009|
Bibliographical noteFunding Information:
We thank R. Thorne for providing crystals, M. Uddin, M. Freamat, D. Dominko, and E. Bittle for supporting measurements, and O. Narayan for helpful comments. This work was supported by the U.S. National Science Foundation, Grant #0400938.
- Critical effects
- Diffusion constant
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering