Unconventional superconductivity in Sr2RuO4

G. M. Luke, Y. Fudamoto, K. M. Kojima, M. I. Larkin, B. Nachumi, Y. J. Uemura, J. E. Sonier, Y. Maeno, Z. Q. Mao, Y. Mori, D. F. Agterberg

Research output: Contribution to journalConference articlepeer-review

31 Scopus citations

Abstract

We have performed ZF-μSR measurements of Sr2RuO4 and have observed a spontaneous magnetic field below Tc. This observation, combined with other symmetry considerations demonstrates that superconductivity in Sr2RuO4 is of `p-wave' (odd-parity) type. Our transverse field μSR measurements in the mixed state with B = 150 G∥c clearly indicate the presence of a square flux lattice. We have analyzed the field distribution in terms of the penetration depth, coherence length and a Fermi surface anisotropy term and found λ(T = 0) = 1900 angstroms. λ(T→0) is quite flat, consistent with a superconducting gap with no nodes as expected for the Eu(kx±iky) state.

Original languageEnglish (US)
Pages (from-to)373-376
Number of pages4
JournalPhysica B: Condensed Matter
Volume289-290
DOIs
StatePublished - Aug 2000
Event8th International Conference on Muon Spin Rotation, Relaxation and Resonance (muSR'99) - Les Diablerets, Switz
Duration: Aug 30 1999Sep 3 1999

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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