Pregled bibliografske jedinice broj: 755055
Evolution of ferroelectricity in tetrathiafulvalene-p-chloranil as a function of pressure and temperature
Evolution of ferroelectricity in tetrathiafulvalene-p-chloranil as a function of pressure and temperature // The Journal of chemical physics, 140 (2014), 24; 244511, 6 doi:10.1063/1.4884964 (međunarodna recenzija, članak, znanstveni)
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Naslov
Evolution of ferroelectricity in tetrathiafulvalene-p-chloranil as a function of pressure and temperature
Autori
Dengl, Armin ; Beyer, Rebecca ; Peterseim, Tobias ; Ivek, Tomislav ; Untereiner, Gabriele ; Dressel, Martin
Izvornik
The Journal of chemical physics (0021-9606) 140
(2014), 24;
244511, 6
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
neutral-ionic transition ; organic insulator ; molecular vibrations ; vibrational spectroscopy ; infrared ; temperature ; pressure
Sažetak
The neutral-to-ionic phase transition in the mixed-stack charge-transfer complex tetrathiafulvalene-p-chloranil (TTF-CA) has been studied by pressure-dependent infrared spectroscopy up to p = 11 kbar and down to low temperatures, T = 10 K. By tracking the C=O antisymmetric stretching mode of CA molecules, we accurately determine the ionicity of TTF-CA in the pressure-temperature phase diagram. At any point, the TTF-CA crystal bears only a single ionicity ; there is no coexistence region or an exotic high-pressure phase. Our findings shed new light on the role of electron-phonon interaction in the neutral-ionic transition.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
- MEDLINE
