Charge-Ordering Transition in (TMTTF)${}_2$X Explored via Dilatometry

Abstract

Charge-ordering phenomena have been highly topical over the last few years. A phase transition towards a charge ordered state has been observed experimentally in several classes of materials. Among them, many studies have been devoted to the family of quasi-one dimensional organic charge-transfer salts (TMTTF)${}_2$X, where (TMTTF) stands for tetramethyltetrathiafulvalene and X for a monovalent anion (X = PF${}_6$, AsF${}_6$ and SbF${}_6$). However, the relationship between the electron localization phenomena and the role of the lattice distortion in stabilizing the charge-ordering pattern is poorly documented in the literature. Here we present a brief overview of selected literature results with emphasis placed on recent thermal expansion experiments probing the charge-ordering transition of these salts.

21 pages, 17 figures

References in corpus (10)

• Spin current and magneto-electric effect in non-collinear magnets
• Theoretical Aspects of Charge Ordering in Molecular Conductors
• Strong electronic correlations in superconducting organic charge transfer salts
• Ordering phenomena in quasi one-dimensional organic conductors
• Anomalous Lattice Response at the Mott Transition in a Quasi-2D Organic Conductor
• Evidence for Lattice Effects at the Charge-Ordering Transition in (TMTTF)${}_2$X
• Scaling theory of the Mott transition and breakdown of the Grüneisen scaling near a finite-temperature critical end point
• High-resolution thermal expansion measurements under Helium-gas pressure
• Low temperature structural effects in the (TMTSF)${}_2$PF${}_6$ and AsF${}_6$ Bechgaard salts
• Magneto-elastic coupling in the spin-Peierls ground state of hydrogenated and deuterated (TMTTF)${}_2$PF${}_6$ salts

Cited by in corpus (6)

• Anions effects on the electronic structure and electrodynamic properties of the Mott insulator $\kappa$-(BEDT-TTF)${}_2$Ag${}_2$(CN)${}_3$
• Probing the Mott Physics in $\kappa$-(BEDT-TTF)${}_2$X Salts via Thermal Expansion
• Probing the Ionic Dielectric Constant Contribution in the Ferroelectric Phase of the Fabre-Salts
• Electron spins interaction in the spin-Peierls phase of the organic spin chain (o -DMTTF) 2 X (X = Cl, Br, I)
• Enhancement of the thermal expansion of organic charge transfer salts by strong electronic correlations
• Realization of anomalous multiferroicity in free-standing graphene with magnetic adatoms