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Physica C Superconductivity

Induced magnetization and inhomogeneous superconductivity in presence of external magnetic field

Chia‐Wei Yang, ARMEN N. KOCHARIAN, Y. L. Chiang

Published Nov 1, 2001• 1 citation
Publisher
DOI
10.1016/s0921-4534(01)00742-0

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[[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 less than or equal to, 0, in the presence of external magnetic field h greater than or equal to 0, temperature T greater than or equal to 0 and electron concentration 0 less than or equal to n less than or equal to 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 Delta ((-))(q) has wave vector (0 < \q \ less than or equal to pi). The concentration of double occupied sites and the bound electron pairs with opposite spins n(pair) are calculated and we found a simple relationship between the order parameters Delta ((-))(q) and average spin s, valid for the arbitrary U, all n and h. (C) 2001 Published by Elsevier Science B.V.
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Generation and robustness of non-local correlations induced by Heisenberg XYZ and intrinsic decoherence models: (x,y)-spin-orbit interactions and xxx- magnetic field
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