Off-diagonal superconducting correlations and nagaoka instability in the repulsive Hubbard model

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/27713

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題名:	Off-diagonal superconducting correlations and nagaoka instability in the repulsive Hubbard model
其他題名:	在哈巴特排斥模型中之超導關聯
作者:	Kocharian, A. N.;Jermakian, A. K.;楊棨;Yang, Chi
貢獻者:	淡江大學物理學系
關鍵詞:	Superconductivity;Nagaoka instability;Hubbard model
日期:	1997-02-01
上傳時間:	2009-12-31 10:39:22 (UTC+8)
出版者:	Elsevier
摘要:	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.
關聯:	Physica B: Condensed Matter 230-232, pp.466-468
DOI:	10.1016/S0921-4526(96)00616-3
顯示於類別:	[物理學系暨研究所] 期刊論文

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