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The Weights of Various Features in the Magnetic Spectra of Cuprates
Author(s) -
Aeppli G.,
Hayden S. M.,
Dai P.,
Mook H. A.,
Hunt R. D.,
Perring T. G.,
Dogan F.
Publication year - 1999
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/(sici)1521-3951(199909)215:1<519::aid-pssb519>3.0.co;2-8
Subject(s) - cuprate , context (archaeology) , condensed matter physics , spectral line , physics , superconductivity , neutron scattering , magnetic moment , ion , spin (aerodynamics) , planar , scattering , quantum mechanics , geology , computer science , paleontology , thermodynamics , computer graphics (images)
We review briefly the magnetic fluctuation spectra, obtained by neutron scattering, of the high temperature superconductor YBa 2 Cu 3 O 6.6 ( T c = 62.7 K). The resonance at 34 meV is the most prominent spectral feature in the superconducting state. Even so, its net weight accounts for a mere 1% of the total squared moment expected for planar Cu 2+ ions. For context, we also provide a discussion of the spectral weights associated with the magnetic order and spin waves in two‐dimensional S = 1/2 Heisenberg antiferromagnets.