Incommensurate magnetism near quantum criticality in CeNiAsO

Shan Wu, W. A. Phelan, L. Liu, J. R. Morey, J. A. Tutmaher, J. C. Neuefeind, Ashfia Huq, Matthew B. Stone, M. Feygenson, David W. Tam, Benjamin A. Frandsen, Benjamin Trump, Cheng Wan, S. R. Dunsiger, T. M. McQueen, Y. J. Uemura, C. L. Broholm

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3 Scopus citations

Abstract

We report the discovery of incommensurate magnetism near quantum criticality in CeNiAsO through neutron scattering and zero field muon spin rotation. For T<TN1=8.7(3) K, a second order phase transition yields an incommensurate spin density with a wave vector k=(0.44(4),0,0). For T<TN2=7.6(3) K, we find coplanar commensurate order with a moment of 0.37(5)μB, reduced to 30% of the saturation moment of the |±12.

Original languageEnglish
Article number197203
JournalPhysical Review Letters
Volume122
Issue number19
DOIs
StatePublished - May 15 2019

Funding

FundersFunder number
Directorate for Mathematical and Physical Sciences1436095

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