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|Title:||Rare earth ion size dependence of the T<inf>c</inf>of the "RE-123" HTSC within the (d + s)-wave description of their superconducting state|
|Authors:||I. M. Tang|
The Institute of Science and Technology for Research and Development, Mahidol University
|Keywords:||Physics and Astronomy|
|Citation:||Physics Letters, Section A: General, Atomic and Solid State Physics. Vol.244, No.5 (1998), 442-448|
|Abstract:||The dependence of the Tc's on the radius of the rare earth ions in the rare earth "123" high temperature superconductors (HTSC) is explained within the framework of a (d + s)-wave model of superconductivity. The appearance of a s-wave symmetry component in the order parameter of a spin fluctuation mediated d-wave superconductor is taken to be due to the orthorhombic distortion which occurs in these HTSC. It is assumed that the structural (orthorhombic) distortion induces a corresponding anisotropy in the pairing interaction, resulting in a nonseparable anisotropic interaction. It is shown that the Tc's are affected by the orthorhombic distortion which in turn is observed to depend on the size of the RE ions. © 1998 Elsevier Science B.V.|
|Appears in Collections:||Scopus 1991-2000|
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