Journal
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Volume 67, Issue 1-3, Pages 64-67Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2005.10.041
Keywords
oxides; superconductors; superconductivity; magnetic properties
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We have done a series of tricrystal experiments to investigate the doping dependence of pairing symmetry in various hole-doped cuprate superconductors with doping levels ranging from underdoped to overdoped regimes. The results of this work have indicated that the d(x2-y2) pair state is robust against a wide range of doping variation. Our findings underscore the importance of strong on-site Coulomb repulsion in pairing interaction, which favors the d(x2-y2)-wave pairing symmetry over pair states with other symmetries. (c) 2005 Elsevier Ltd. All rights reserved.
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