Abstract
We report a 35 Cl NQR investigation into the neutral–ionic (NI) phase transition in DMTTF-QCl 4 (4,4'-dimethyltetrathiafulvalene- p -chloranil), the end material of the family containing an NI quantum transition system. Four distinct lines with comparable intensities were observed well below T c =65 K; this observation is consistent with the antiferroelectric nature of the ionic phase. The temperature dependences of the spectral shift and splitting below T c are moderate in contrast with the case of TTF-QCl 4 . Low-energy charge-lattice fluctuations are observed around T c as a drastic increase of 1/ T 1 , allowing the observation of the quantum fluctuations in a chemically substituted complex. An analysis of the NQR spectra yields detailed temperature variations in the charge transfer and the concomitant lattice distortion around the NI transition.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
