Ru-Knight shift measurement in the superconducting state of Sr2 RuO4

K. Ishida, H. Mukuda, Y. Kitaoka, Z. Q. Mao, Fukazawa, Y. Maeno

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Abstract

Knight shift of 99Ru (99K) has been measured, in the superconducting (SC) state of Sr2 RuO4 with Tc ∼ 1.5 K. The spin component of 99K is negative and approximately one order of magnitude larger than that of 17O Knight shift ( 17K) in the RuO2 plane, indicating that the Ru site feels a stronger hyperfine field originating from Ru-4d electrons. 99K parallel to the RuO2 plane shows no change in the SC state, in agreement with the previous 17K results. The invariance of the spin susceptibility at both Ru and O sites in the SC state gives the decisive evidence that SC pairs are in the spin-triplet state with the SC d-vector perpendicular to the RuO2 plane.

Original languageEnglish (US)
Pages (from-to)353-354
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume226-230
Issue numberPART I
DOIs
Publication statusPublished - Jan 1 2001

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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