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    Title: Induced magnetization and inhomogeneous superconductivity in presence of external magnetic field
    Authors: 楊棨;Yang, Chi;Kocharian, A. N.;Chiang, Y. L.
    Contributors: 淡江大學物理學系
    Keywords: Hubbard model;Phase diagram;Inhomogeneous superconductivity
    Date: 2001-11
    Issue Date: 2009-12-31 10:40:36 (UTC+8)
    Publisher: Elsevier
    Abstract: Thermodynamic characteristics of the one-dimensional attractive Hubbard model are calculated by means of the generalized self-consistent field (GSCF) approach for a wide range of interaction strength U⩽0, in the presence of external magnetic field h⩾0, temperature T⩾0 and electron concentration 0⩽n⩽1. The GSCF theory shows a sharp transition driven by h>0 and T from the uniform superconducting state into a spatially inhomogeneous state in which the order parameter Full-size image (<1 K) has wave vector (Full-size image (<1 K)). The concentration of double occupied sites and the bound electron pairs with opposite spins npair are calculated and we found a simple relationship between the order parameters Full-size image (<1 K) and average spin s, valid for the arbitrary U, all n and h.
    Relation: Physica C: superconductivity 364-365, pp.155-157
    DOI: 10.1016/S0921-4534(01)00742-0
    Appears in Collections:[物理學系暨研究所] 期刊論文

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