Conduction and optical effects in the plastic charge-density waves
Abstract
The creep motion of the charge-density wave (CDW) and its modulation through optical excitation in the low-temperature state of K{0.3}MoO{3} are analyzed in terms of a local pinning theory, in which local metastable states created by pinning induced phase dislocations are considered. The nonlinear I-V curve below the sliding threshold field (Vs) can be well reproduced with a numerical calculation, and it is shown that photoexcitation increases the transition probability of phase slips, which promotes the creep motion, and also leads to a relaxation of the phase strain.
- Publication:
-
Journal de Physique IV
- Pub Date:
- December 2005
- DOI:
- 10.1051/jp4:2005131028
- Bibcode:
- 2005JPhy4.131..123O