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High‐ T c cuprate superconductivity as a new paradigm
Author(s) -
Won Hyekyung,
Morita Yoshifumi,
Maki Kazumi
Publication year - 2007
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200743205
Subject(s) - cuprate , pseudogap , superconductivity , condensed matter physics , physics , phase (matter) , high temperature superconductivity , quantum mechanics
Abstract High‐ T c cuprate superconductivity was discovered two decades ago by Bednorz and Müller. Even now the origin and the nature of this remarkable group of superconductors appear to be hotly debated in the literature. However, we believe that a few things are clearly established: (i) the high‐ T c cuprate superconductors in the overdoped region are the BCS d‐wave superconductors (dSC), (ii) the pseudogap phase is a d‐wave spin density wave (dSDW) and (iii) the superconductivity in the underdoped region is gossamer (i.e. dSC in coexistence with dSDW). Here we review these developments and consider a class of nodal superconductors, which share similar phase diagrams to those for high‐ T c cuprate superconductors. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)