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    National Tsing Hua University Institutional Repository > 理學院 > 物理系 > 期刊論文 >  Correlation effects of single-wall carbon nanotubes in weak coupling

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/54843

    Title: Correlation effects of single-wall carbon nanotubes in weak coupling
    Authors: Lin HH
    教師: 林秀豪
    Date: 1998
    Publisher: American Physical Society
    Relation: PHYSICAL REVIEW B, American Physical Society, Volume 58, Issue 8, AUG 15 1998, Pages 4963-4971
    Abstract: Single-wall carbon nanotubes with on-site interaction U much less than t an studied by a controlled renormalization group method. When formulated as a system of Ni flavors of interacting Dirac fermions, the effective model at generic filling resembles a set of quasi-1D Hubbard chains. For the undoped (N-y,N-y) armchair and the (N-x,-N-x) zigzag with N-x = 3n, specific mappings to the two-chain Hubbard model at half filling with effective interaction u(eff)=U/Ny and 2U/N-x are found from this more general equivalence. The phase diagrams of the (3,3) armchair and the (6,-6) zigzag at generic fillings are studied and compared as an example.
    URI: http://www.aps.org/
    Appears in Collections:[物理系] 期刊論文

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