Antiferromagnetic order in Ca10(Pt3As 8)(Fe2As2)5 observed by 75As NMR

T. Zhou, G. Koutroulakis, J. Lodico, Ni Ni, J. D. Thompson, R. J. Cava, S. E. Brown

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75As nuclear magnetic resonance (NMR) measurements carried out on underdoped, non-superconducting Ca10(Pt3As 8)(Fe2As2)5 reveal physical properties that are similar but not identical to 122 superconductor parent compounds such as BaFe2As2. Results from the single crystal study indicate a phase transition to an antiferromagnetic (AF) state on cooling through T ∼ 100 K, albeit nonuniformly. Specifically, the NMR lineshape reflects the presence of staggered hyperfine fields on the As sites associated with a striped AF order. The variation of the internal hyperfine field with temperature suggests that the phase transition to the AF state is discontinuous, and therefore likely coincident with the structural transition inferred from transport experiments.

Original languageEnglish (US)
Article number122201
JournalJournal of Physics Condensed Matter
Issue number12
StatePublished - Mar 27 2013

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • General Materials Science


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