Cu spin dynamics and superconducting precursor effects in planes above Tc in YBa2Cu3O6.7

W. W. Warren, R. E. Walstedt, G. F. Brennert, R. J. Cava, R. Tycko, R. F. Bell, G. Dabbagh

Research output: Contribution to journalArticle

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Abstract

Spin dynamics at planar sites in oxygen-deficient YBa2Cu3O6+x have been investigated by nuclear spin-lattice relaxation measurements using 63,65Cu nuclear quadrupole resonance and Y89 NMR. A sharp decrease of Cu63 nuclear relaxation below 100 K in YBa2Cu3O6.7 suggests the possible onset of spin pairing in individual planes well above the transition to three-dimensional bulk superconductivity. Comparison of the relaxation rates for the 60-K superconductor YBa2Cu3O6.7 with those of YBa2Cu3O7.0 in the range 100 300 K shows that the planar Cu(2) spin dynamics are strongly affected by changes in carrier concentration.

Original languageEnglish (US)
Pages (from-to)1193-1196
Number of pages4
JournalPhysical review letters
Volume62
Issue number10
DOIs
StatePublished - Jan 1 1989
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Warren, W. W., Walstedt, R. E., Brennert, G. F., Cava, R. J., Tycko, R., Bell, R. F., & Dabbagh, G. (1989). Cu spin dynamics and superconducting precursor effects in planes above Tc in YBa2Cu3O6.7. Physical review letters, 62(10), 1193-1196. https://doi.org/10.1103/PhysRevLett.62.1193