Slowing down of the relaxational dynamics at the ferroelectric phase transition in one-dimensional (TMTTF)2AsF6

2005/09/19 by Damir Starešinić, D. Staresinic, K. Biljakovic +3 · 2 citations
Chemistry · Materials Science · Physics and Astronomy · #Condensed matter physics #Dielectric #Dynamics (music) #Ferroelectricity #Inorganic Fluorides and Related Compounds #Materials science #Optoelectronics #Organic and Molecular Conductors Research #Phase (matter) #Phase transition #Physics #Quantum mechanics #Solid-state spectroscopy and crystallography #cond-mat.str-el

paper · pdf · doi:10.1016/j.ssc.2005.11.035

PDF created from MSWord, 5 pages, 4 figures in color

arxiv created 2005/09/19 · openalex publication_date 2005/12/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We present measurements of the dielectric response of quasi one-dimensional (TMTTF)2AsF6 in a wide temperature and frequency range. We provide a thorough characterization of the relaxational dynamics observed close to the ferroelectric-like transition at Tc = 100 K. Our measurements, extending up to 100 MHz, reveal a continuous slowing down of the mean relaxation time when approaching Tc from high as well as from low temperatures. The simultaneous critical rise of dielectric constant and relaxation time point to an explanation of the transition in terms of a classic ferroelectric scenario.

Citations

• Influence of the anion potential on the charge ordering in quasi-one-dimensional charge-transfer salts

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