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Collective excitations in the charge-ordered phase of α-(BEDT-TTF)2I3
- Source :
- Physical review letters. 104(20)
- Publication Year :
- 2009
-
Abstract
- The charge response of a charge-ordered state in the organic conductor α-(BEDT-TTF)2I3 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 2k(F) bond-charge density wave which forms in the ab plane. The small dielectric mode is associated with the motion of domain-wall pairs along the a and b axes between two types of domains which are created due to inversion symmetry breaking.
Details
- ISSN :
- 10797114
- Volume :
- 104
- Issue :
- 20
- Database :
- OpenAIRE
- Journal :
- Physical review letters
- Accession number :
- edsair.pmid..........e1cf243f42e86b4891c4563954d869e1