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Title
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Microscopic theory of orientational disorder and the orientational phase transition in solid
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Author
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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Physical review letters. - New York, N.Y., 1958, currens
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Publication
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New York, N.Y.
:
American Physical Society
,
1992
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ISSN
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0031-9007
[print]
1079-7114
[online]
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DOI
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10.1103/PHYSREVLETT.68.2929
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Volume/pages
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68
:19
(1992)
, p. 2929-2932
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ISI
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A1992HT64800019
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Full text (Publisher's DOI)
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Full text (open access)
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