From Ising Resonant Fluctuations to Static Uniaxial Order in Antiferromagnetic and Weakly Superconducting CeCo(In1-xHgx)(5) (x=0.01)

C. Stock*, J. A. Rodriguez-Rivera, K. Schmalzl, F. Demmel, D. K. Singh, F. Ronning, J. D. Thompson, E. D. Bauer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

CeCo(In0.990Hg0.010)(5) is a charge doped variant of the d-wave CoCoIn5 superconductor with coexistent antiferromagnetic and superconducting transitions occurring at T-N = 3.4 and T-c = 1.4 K, respectively. We use neutron diffraction and spectroscopy to show that the magnetic resonant fluctuations present in the parent superconducting phase are replaced by collinear c-axis magnetic order with three-dimensional Ising critical fluctuations. No low-energy transverse spin fluctuations are observable in this doping-induced antiferromagnetic phase and the dynamic resonant spectral weight predominately shifts to the elastic channel. Static (tau > 0.2 ns) collinear Ising order is proximate to superconductivity in CeCoIn5 and is stabilized through hole doping with Hg.

Original languageEnglish
Article number037003
Number of pages7
JournalPhysical Review Letters
Volume121
Issue number3
DOIs
Publication statusPublished - 19 Jul 2018

Keywords

  • HIGH-TEMPERATURE SUPERCONDUCTORS
  • HEAVY-FERMION SUPERCONDUCTORS
  • UNCONVENTIONAL SUPERCONDUCTIVITY
  • UNDERDOPED YBA2CU3O6+X
  • T-C
  • SCATTERING
  • DYNAMICS
  • CERHIN5
  • UPD2AL3
  • CECOIN5

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