Atomic and electronic structures of large and small carbon tori

Vincent Meunier, Philippe Lambin, Amand Lucas

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    The stability of large carbon tori is examined within the elasticity theory. Tori of diameter larger than 200 nm obtained by bending a single-wall nanotube and connecting the two ends together are proved to be stable. Molecular mechanics is used for optimizing the structure of a small polygonal torus (C1960) obtained by connecting short portions of (6,6) and (10,0) nanotubes with ten pairs of pentagons and heptagons. The electronic structures of both small and large tori are determined within the framework of a tight-binding Hamiltonian, and their energies are compared. By application of London theory, it is shown that a magnetic field deeply influences the electronic structure of the carbon tori.
    langue originaleAnglais
    Pages (de - à)14886-14890
    Nombre de pages5
    journalPhysical Review. B, Condensed Matter and Materials Physics
    Numéro de publication23
    Les DOIs
    Etat de la publicationPublié - 1998

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