Multinuclear NMR/NQR study of HgBa2CuO4+xFy superconductors with different oxygen and fluorine content

A. A. Gippius, E. V. Antipov, O. Klein, K. Lüders

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We have measured 63,65Cu NMR/NQR spectra, 199Hg and 19F NMR spectra and spin-lattice relaxation rate on a series of powder HgBa2CuO4+xFy samples with different oxygen and fluorine content. Comparison of 63Cu and 199Hg relaxation data to numerical calculations for several types of the order parameter symmetry gives the best coincidence with the d-wave symmetry. 19F NMR line width and relaxation rate are strongly influenced by the magnetic flux-line motion. The 19F magnetization recovery curve is described by a stretched exponential function. The 19F spin-lattice relaxation strongly depends on the fluorine content evidencing that at higher doping level part of F atoms occupy the apical O2 position.

Original languageEnglish
Pages (from-to)935-936
Number of pages2
JournalPhysica B: Condensed Matter
Volume284-288
Issue numberPART I
DOIs
Publication statusPublished - 2000
Externally publishedYes

Keywords

  • NMR
  • Spin-lattice relaxation

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