17 O Knight shift study in the superconducting state of Sr2RuO4

H. Mukuda, K. Ishida, Y. Kitaoka, Zhiqiang Mao, Y. Mori, Y. Maeno

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Abstract

17 O Knight shift measurements in Sr2RuO4 were performed over the wide range of magnetic field 3.2-11.4kOe parallel to the basal RuO2 planes. The spin susceptibility is totally unchanged through its Tc, evidencing that the spin-triplet superconducting state is realized in Sr2RuO4. The result indicates that the Cooper pairs consist of the parallel spin pairs | ↑↑> and | ↑↑> with their quantization axis perpendicular to the c-axis direction. The in-plane 2D nearly ferromagnetic spin fluctuations may play a role for the stabilization of this state among various representations of spin-triplet order parameter.

Original languageEnglish (US)
Pages (from-to)1587-1591
Number of pages5
JournalJournal of Low Temperature Physics
Volume117
Issue number5-6
StatePublished - Dec 1 1999

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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    Mukuda, H., Ishida, K., Kitaoka, Y., Mao, Z., Mori, Y., & Maeno, Y. (1999). 17 O Knight shift study in the superconducting state of Sr2RuO4. Journal of Low Temperature Physics, 117(5-6), 1587-1591.