Coexistence of antiferromagnetism and superconductivity in CeCo(In0.9Cd0.1)5: A spin lattice relaxation study

R. R. Urbano*, Ben-Li Young, N. J. Curro, J. D. Thompson, L. D. Pham, Z. Fisk

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We present an In(1) NQR study on the heavy-fermion (HF) compound CeCo(In1-xCdx)5(x = 0.10) . Bulk measurements indicate that Cd doping acts as an electronic tuning agent in CeCoIn5, and that superconductivity (SC) and antiferromagnetism (AFM) may coexist at ambient pressure for 0.05 < x < 0.15. For x = 0.10, the nuclear spin lattice relaxation rate shows a broad peak at the Néel temperature TN = 2.8 K, with a subsequent onset of SC at Tc ≃ 1.2 K. Our results provide strong evidence for microscopic coexistence of these two ground states. The nuclear magnetization recovery curves in both the ordered and mixed states reveal a single T1-component, which suggests a homogeneous nature of the Ce-4f1 electronic state.

Original languageEnglish
Pages (from-to)1056-1058
Number of pages3
JournalPhysica B: Condensed Matter
Volume403
Issue number5-9
DOIs
StatePublished - 1 Apr 2008

Keywords

  • Heavy fermions
  • Magnetism
  • NMR
  • Superconductivity

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