CRITICAL CURRENT IN THE HIGH-TcGLASS MODEL

I. Morgenstern, W. Fettes () and T. Husslein
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I. Morgenstern: Faculty of Physics, University of Regensburg, 93040 Regensburg, Germany
W. Fettes: Faculty of Physics, University of Regensburg, 93040 Regensburg, Germany
T. Husslein: Faculty of Physics, University of Regensburg, 93040 Regensburg, Germany

International Journal of Modern Physics C (IJMPC), 1999, vol. 10, issue 07, 1335-1345

Abstract: The high-Tcglass model can be combined with the repulsive tt'–Hubbard model as microscopic description of the striped domains found in the high-Tcmaterials. In this picture, the finite Hubbard clusters are the origin of thed-wave pairing. In this paper we show that the glass model can also explain the critical currents usually observed in the high-Tcmaterials. We use two different approaches to calculate the critical current densities of the high-Tcglass model. Both lead to a strongly anisotropic critical current. Finally we give an explanation of why we nonetheless expect a nearly perfect isotropic critical current in high-Tcsuperconductors.

Keywords: High-Tc; Superconductivity; Glass model; Critical current; Bean model (search for similar items in EconPapers)
Date: 1999
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DOI: 10.1142/S0129183199001091

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