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Lattice dynamical approach to the phase transition in A-TCNB charge-transfer crystals

✍ Scribed by Karl-Heinz Brose; Tadeusz Luty; Craig J. Eckhardt

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 397 KB
Volume: 137
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(87)80296-8

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✦ Synopsis

Lattice dynamical calculations have been performed for the charge-transfer complex crystal of anthracene with 1,2,4,5_tetracyanobenzene. Application is made to the orientational phase transition observed in this system. The results suggest that the high temperature phase is dynamically disordered and that the phase transition is driven by a librational phonon mode exhibiting soft mode behavior.

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