Abstract
The charge response of a charge-ordered state in the organic conductor is characterized by dc resistivity, dielectric and optical spectroscopy in different crystallographic directions within the two-dimensional conduction layer. Two dielectric modes are detected. The large mode is related to the phasonlike excitation of the bond-charge density wave which forms in the plane. The small dielectric mode is associated with the motion of domain-wall pairs along the and axes between two types of domains which are created due to inversion symmetry breaking.
- Received 7 December 2009
DOI:https://doi.org/10.1103/PhysRevLett.104.206406
©2010 American Physical Society