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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27713


    Title: Off-diagonal superconducting correlations and nagaoka instability in the repulsive Hubbard model
    Other Titles: 在哈巴特排斥模型中之超導關聯
    Authors: Kocharian, A. N.;Jermakian, A. K.;楊棨;Yang, Chi
    Contributors: 淡江大學物理學系
    Keywords: Superconductivity;Nagaoka instability;Hubbard model
    Date: 1997-02
    Issue Date: 2009-12-31 10:39:22 (UTC+8)
    Publisher: Elsevier
    Abstract: The finite Hubbard lattice with strong repulsion away from half-filling in a strong magnetic field is considered. The exact ground state energies and density-density correlation function for electrons in the high-spin limit with one spin-flip state (Nagaoka instability) is calculated for an arbitrary number of electrons and lattice sites in periodic hypercubes in one, two and three dimensions. The criteria for stability of either the spin-flipped phase or saturated Nagaoka state at large U and finite doping are derived.
    Relation: Physica B: Condensed Matter 230-232, pp.466-468
    DOI: 10.1016/S0921-4526(96)00616-3
    Appears in Collections:[物理學系暨研究所] 期刊論文

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