Magnetism in superconducting EuFe2As1.4P0.6 single crystals studied by local probes Academic Article uri icon

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abstract

  • We have studied the magnetism in superconducting single crystals of EuFe2 As1.4 P0.6 by using the local probe techniques of zero-field muon spin rotation/relaxation and 151 Eu/57 Fe M\"ossbauer spec- troscopy. All of these measurements reveal magnetic hyperfine fields below the magnetic ordering temperature TM = 18 K of the Eu2+ moments. The analysis of the data shows that there is a coexistence of ferromagnetism, resulting from Eu2+ moments ordered along the crystallographic c-axis, and superconductivity below TSC \approx 15 K. We find indications for a change in the dynamics of the small Fe magnetic moments (\sim 0.07 \mu B) at the onset of superconductivity: below TSC the Fe magnetic moments seem to be "frozen" within the ab-plane.

authors

  • Munevar, J
  • Micklitz, H
  • Alzamora, M
  • Argüello, C
  • Goko, T
  • Ning, FL
  • Munsie, T
  • Williams, TJ
  • Aczel, AA
  • Luke, Graeme
  • Chen, GF
  • Yu, W
  • Uemura, YJ
  • Baggio-Saitovitch, E

publication date

  • June 2014