Title
Microscopic theory of orientational disorder and the orientational phase transition in solid <tex>$C_{60}$</tex> Microscopic theory of orientational disorder and the orientational phase transition in solid <tex>$C_{60}$</tex>
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
New York, N.Y. ,
Subject
Physics
Source (journal)
Physical review letters. - New York, N.Y.
Volume/pages
68(1992) :19 , p. 2929-2932
ISSN
0031-9007
ISI
A1992HT64800019
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We have developed a microscopic theory which describes the orientational dynamics of C60 molecules in the face-centered-cubic phase of C60 fullerite. The molecular interaction potential and the crystal-field potential are formulated in terms of symmetry-adapted rotator functions. The phase transition to the Pa3BAR structure is driven by an active multipolar mode of T2g symmetry belonging to the l = 10 manifold. The Birman criterion is satisfied. The transition is found to be of first order.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/0bdc0e/7806.pdf
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