Incommensurate magnetism near quantum criticality in CeNiAsO

Abstract

Two phase transitions in the tetragonal strongly correlated electron system CeNiAsO were probed by neutron scattering and zero field muon spin rotation. For $T<T_{N1}$ = 8.7(3) K, a second order phase transition yields an incommensurate spin density wave with wave vector $\text{k}=(0.44(4),0,0)$. For $T<T_{N2}$ = 7.6(3) K, we find co-planar commensurate order with a moment of $0.37(5){\mu }_B$, reduced to $30\%$ of the saturation moment of the $|\pm \frac{1}{2}⟩$ Kramers doublet ground state, which we establish by inelastic neutron scattering. Muon spin rotation in $\mathrm{CeNiA}{\mathrm{s}}_{1-\mathrm{x}}{\mathrm{P}}_{\mathrm{x}}\mathrm{O}$ shows the commensurate order only exists for x $\le$ 0.1 so the transition at $x_c$ = 0.4(1) is from an incommensurate longitudinal spin density wave to a paramagnetic Fermi liquid.

References in corpus (20)

• Quantum Criticality in Heavy Fermion Metals
• Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity
• Magnetically driven ferroelectric order in Ni${}_3$V${}_2$O${}_8$
• Quantum criticality
• Hidden Magnetism and Quantum Criticality in the Heavy Fermion Superconductor CeRhIn5
• Hall-effect evolution across a heavy-fermion quantum critical point
• Evidence for incommensurate spin fluctuations in Sr_2RuO_4
• Competitions in layered ruthenates: ferro- vs. antiferromagnetism and triplet vs. singlet pairing
• Incommensurate magnetic structure of CeRhIn5
• Hidden Multiple-spin Interactions as an Origin of Spin Scalar Chiral Order in Frustrated Kondo Lattice Models
• Fermi-surface collapse and dynamical scaling near a quantum critical point
• Interplay of Rare Earth and Iron magnetism in RFeAsO with R = La, Ce, Pr, and Sm: A muon spin relaxation study and symmetry analysis
• Multiple-Q Instability by (d-2)-dimensional Connections of Fermi Surfaces
• Multiple quantum phase transitions in a heavy fermion antiferromagnet
• Fermi surface reconstruction and multiple quantum phase transitions in the antiferromagnet CeRhIn${}_5$
• From incommensurate correlations to mesoscopic spin resonance in YbRh2Si2
• Heavy Fermion Quantum Criticality and Destruction of the Kondo Effect in a Nickel Oxypnictide
• Single to multi quasiparticle excitations in the itinerant helical magnet CeRhIn${}_5$
• CeNiAsO: an antiferromagnetic dense Kondo lattice
• Stoichiometry, Spin Fluctuations, and Superconductivity in LaNiPO

Cited by in corpus (8)

• Heavy-electron quantum criticality and single-particle spectroscopy
• Incommensurate magnetism mediated by Weyl fermions in NdAlSi
• ${}^{75}$As NMR study of the antiferromagnetic Kondo lattice compound CeNiAsO
• Odd-Parity Magnetism in Fe-Based Superconductors
• Incommensuration in odd-parity antiferromagnets
• Quantum spin models of commensurate $p$-wave magnets
• Sub-spin-flop switching of a fully compensated antiferromagnet by magnetic field
• Incommensurate Magnetic Ordering from One-Dimensional Correlated Topological Bulk States