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Interacting antiferromagnetic droplets in quantum critical CeCoIn5.

  • Author(s): Urbano, RR
  • Young, BL
  • Curro, NJ
  • Thompson, JD
  • Pham, LD
  • Fisk, Z
  • et al.
Abstract

The heavy fermion superconductor CeCoIn5 can be tuned between superconducting and antiferromagnetic ground states by hole doping with Cd. Nuclear magnetic resonance data indicate that these two orders coexist microscopically with an ordered moment approximately 0.7 microB. As the ground state evolves, there is no change in the low-frequency spin dynamics in the disordered state. These results suggest that the magnetism emerges locally in the vicinity of the Cd dopants.

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