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    題名: Phase diagram and magnetic correlations in one-dimensional repulsive Hubbard model with magnetic field
    作者: 楊棨;Yang, C.;Kocharian, A. N.;Chiang, Y. L.;Chou, Tin-yu
    貢獻者: 淡江大學物理學系
    關鍵詞: Hubbard model;ground-state properties;magnetic crossover;electron-hole pairs;phase diagram;Bethe-ansatz
    日期: 2002-03
    上傳時間: 2009-12-31 10:35:53 (UTC+8)
    出版者: Physical Society of Japan
    摘要: The generalized self-consistent field (GSCF) theory for the one-dimensional repulsive Hubbard model at half-filling is examined in the presence of magnetic field h in wide range of interaction strength U / t . The evolution of the energy gap in the presence of magnetc field describes a magnetic crossover from itinerant magnetism of weakly bound electron-hole pairs with k F =π/2 to the localized magnetic regime, with the Bose condensation of local electron-hole pairs ( k F =0).
    關聯: Journal of the Physical Society of Japan 71 Suppl., pp.193-195
    DOI: 10.1143/JPSJS.71S.193
    顯示於類別:[物理學系暨研究所] 期刊論文

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