Next Article in Journal
Fluorine Translational Anion Dynamics in Nanocrystalline Ceramics: SrF2-YF3 Solid Solutions
Next Article in Special Issue
Effects of Carrier Doping on the Transport in the Dirac Electron System α-(BEDT-TTF)2I3 under High Pressure
Previous Article in Journal
Thermoluminescent Properties of Cerium-Doped Lu2SO5 and Y2SiO5 Single Crystalline Films Scintillators Grown from PbO-B2O3 and Bi2O3 Fluxes
Previous Article in Special Issue
Design of Spin-Frustrated Monomer-Type C60•− Mott Insulator
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle

Structural and Electronic Properties of (TMTTF)2X Salts with Tetrahedral Anions

1. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, D-70569 Stuttgart, Germany
*
Author to whom correspondence should be addressed.
These authors contributed equally to the work.
Permanent address: Institut za fiziku, Bijenička 46, HR-10000 Zagreb, Croatia.
Crystals 2018, 8(3), 121; https://doi.org/10.3390/cryst8030121
Received: 14 February 2018 / Revised: 27 February 2018 / Accepted: 28 February 2018 / Published: 4 March 2018
(This article belongs to the Special Issue Advances in Organic Conductors and Superconductors)
  |  
PDF [11023 KB, uploaded 6 March 2018]
  |  

Abstract

Comprehensive measurements of the pressure- and temperature-dependent dc-transport are combined with dielectric spectroscopy and structural considerations in order to elucidate the charge and anion orderings in the quasi-one-dimensional charge-transfer salts (TMTTF) 2 X with non-centrosymmetric anions X = BF 4 , ClO 4 and ReO 4 . Upon applying hydrostatic pressure, the charge-order transition is suppressed in all three compounds, whereas the influence on the anion order clearly depends on the particular compound. A review of the structural properties paves the way for understanding the effect of the anions in their methyl cavities on the ordering. By determining the complex dielectric constant ϵ ^ ( ω , T ) in different directions we obtain valuable information on the contribution of the anions to the dielectric properties. For (TMTTF) 2 ClO 4 and (TMTTF) 2 ReO 4 , ϵ b exhibits an activated behavior of the relaxation time with activation energies similar to the gap measured in transport, indicating that the relaxation dynamics are determined by free charge carriers. View Full-Text
Keywords: Fabre salts; one-dimensional conductors; charge order; anion order; electronic transport; pressure dependence; dielectric spectroscopy Fabre salts; one-dimensional conductors; charge order; anion order; electronic transport; pressure dependence; dielectric spectroscopy
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed
Printed Edition Available!
A printed edition of this Special Issue is available here.

Share & Cite This Article

MDPI and ACS Style

Rösslhuber, R.; Rose, E.; Ivek, T.; Pustogow, A.; Breier, T.; Geiger, M.; Schrem, K.; Untereiner, G.; Dressel, M. Structural and Electronic Properties of (TMTTF)2X Salts with Tetrahedral Anions. Crystals 2018, 8, 121.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Crystals EISSN 2073-4352 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top