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NMR evidence for fluctuating, localised magnetic fields in zinc-doped YBa2Cu3O7-δ

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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  • G. Balakrishnan
  • L.W.J. Caves
  • R. Dupree
  • D.McK. Paul
  • M.E. Smith
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<mark>Journal publication date</mark>15/10/1989
<mark>Journal</mark>Physica C: Superconductivity and its Applications
Issue number1
Volume161
Number of pages4
Pages (from-to)9-12
Publication StatusPublished
<mark>Original language</mark>English

Abstract

High resolution NMR data for the changes in the shift and relaxation time of the 89Y resonance are presented for a range of zinc and gallium replacements for copper in YBa2Cu3O7-δ. Strikingly different variations in these NMR parameters are detected for the two substitutions. The interpretation of the experimental data leads to the conclusion that the incorporation of non-magnetic zinc impurities in the Cu(II)-O plane produces fluctuating, localised magnetic moments which may be the origin of the destruction of the superconducting state. © 1989.