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Title: Superconductivity with angular dependent coupling: Stripes, Coulomb repulsion and enhanced T-c
Authors: Ivanov, VA ×
Moshchalkov, Victor #
Issue Date: 2001
Publisher: TRANS TECH PUBLICATIONS LTD
Series Title: Materials science forum vol:373-3 pages:721-724
Conference: date:Katholieke Univ Leuven, Vaste Stof Fys & Magnetisme Lab, B-3001 Louvain, Belgium; Russian Acad Sci, NS Kurnakov Gen & Inorgan Chem Inst, Moscow 117907, Russia
Abstract: We have analyzed the effect of intrinsic doping inhomogeneity and the presence of stripes in high-T-c superconductors on coupling constant lambda by using a simple analytically solvable model with an angular dependent lambda(phi) represented by a square-well form. We have found that the introduction for certain angles of the Coulomb repulsion lambda (C), increasing the "contrast" lambda + lambda (C) or the depth of the angular modulation of lambda(phi), leads to a remarkable enhancement of T-c. This effect can be optimized by combining attractive (lambda < 0) and repulsive ( lambda (C) > 0) interactions along stripes and perpendicular to them.
Description: EUROPEAN MAGNETIC MATERIALS AND APPLICATIONS
ISSN: 0255-5476
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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