Fragile antiferromagnetism in the heavy-fermion compound YbBiPt

Abstract

We report results from neutron scattering experiments on single crystals of YbBiPt that demonstrate antiferromagnetic order characterized by a propagation vector, ${\tau }_{\mathrm{AFM}}$ = ($\frac{1}{2}\frac{1}{2}\frac{1}{2}$), and ordered moments that align along the [1 1 1] direction of the cubic unit cell. We describe the scattering in terms of a two-Gaussian peak fit, which consists of a narrower component that appears below $T_{\mathrm{N}}\approx 0.4$ K and corresponds to a magnetic correlation length of ${\xi }_{\mathrm{n}}\approx$ 80 $\mathring{\mathrm{A}}$, and a broad component that persists up to $T^{\ast }\approx$ 0.7 K and corresponds to antiferromagnetic correlations extending over ${\xi }_{\mathrm{b}}\approx$ 20 $\mathring{\mathrm{A}}$. Our results illustrate the fragile magnetic order present in YbBiPt and provide a path forward for microscopic investigations of the ground states and fluctuations associated with the purported quantum critical point in this heavy-fermion compound.

arXiv comment5 pages, 3 figures

References in corpus (14)

• Locally critical quantum phase transitions in strongly correlated metals
• Tunable Multifunctional Topological Insulators in Ternary Heusler Compounds
• Heavy Fermions and Quantum Phase Transitions
• Weak magnetism and non-Fermi liquids near heavy-fermion critical points
• Colloquium: Hidden Order, Superconductivity, and Magnetism -- The Unsolved Case of URu2Si2
• Two-dimensional fluctuations at the quantum-critical point of CeCu_{6-x}Au_x
• Quantum Criticality and Global Phase Diagram of Magnetic Heavy Fermions
• Magnetic Field Induced Non-Fermi-Liquid Behavior in YbAgGe Single Crystal
• Antiferromagnetic criticality at a heavy-fermion quantum phase transition
• Magnetic field tuned quantum criticality of heavy fermion system YbPtBi
• From incommensurate correlations to mesoscopic spin resonance in YbRh2Si2
• Multiple regions of quantum criticality in YbAgGe
• Field-induced non-Fermi-liquid resistivity of stoichiometric YbAgGe single crystals
• Magnetic order in GdBiPt studied by x-ray resonant magnetic scattering

Cited by in corpus (11)

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• Preserved entropy and fragile magnetism
• Magnetic structure of the antiferromagnetic half-Heusler compound NdBiPt
• Two-channel conduction in YbPtBi
• Magnon spectrum of the Weyl semimetal half-Heusler compound GdPtBi
• Quantum oscillations in heavy fermion compound YbPtBi
• High-resolution x-ray diffraction study of the heavy-fermion compound YbBiPt
• Effects of a magnetic field on the fragile antiferromagnetism in YbBiPt
• Dualism of the 4f electrons and high-temperature antiferromagnetism of the heavy-fermion compound YbCoC${}_2$
• Magnetic order and instability in newly synthesized CoSeAs marcasite