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Surface Rotational Disordering In Crystallinec60

Author

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  • D. PASSERONE

    (Istituto Nazionale per la Fisica della Materia (INFM) and Scuola Internazionale, Superiore di Studi Avanzati (SISSA) Via Beirut 2-4, I-34014 Trieste, Italy)

  • E. TOSATTI

    (Istituto Nazionale per la Fisica della Materia (INFM) and Scuola Internazionale, Superiore di Studi Avanzati (SISSA) Via Beirut 2-4, I-34014 Trieste, Italy;
    International Centre for Theoretical Physics, Trieste, Italy)

Abstract

We present a theory of surface rotational disordering of crystalline fullerene. Realistic intermolecular interactions are implemented, in a layer-by-layer mean field theory. The crucial new ingredient turns out to be a one-body potential energy term, or "crystal field," is totally different at the surface, therefore locally frustrating bulk order. This frustration causes a severe surface order parameter reduction, and a first order surface rotational disordering transition, well below the corresponding bulk one. Preliminary results are in agreement with recent experiments, confirming a first order surface rotational transition ofC60(111)at a transition temperature lower than the bulk one.

Suggested Citation

  • D. Passerone & E. Tosatti, 1997. "Surface Rotational Disordering In Crystallinec60," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 4(05), pages 859-861.
    • Handle: RePEc:wsi:srlxxx:v:04:y:1997:i:05:n:s0218625x97000924
    DOI: 10.1142/S0218625X97000924
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