Long range order and two-fluid behavior in heavy electron materials

Abstract

The heavy electron Kondo liquid is an emergent state of condensed matter that displays universal behavior independent of material details. Properties of the heavy electron liquid are best probed by NMR Knight shift measurements, which provide a direct measure of the behavior of the heavy electron liquid that emerges below the Kondo lattice coherence temperature as the lattice of local moments hybridizes with the background conduction electrons. Because the transfer of spectral weight between the localized and itinerant electronic degrees of freedom is gradual, the Kondo liquid typically coexists with the local moment component until the material orders at low temperatures. The two-fluid formula captures this behavior in a broad range of materials in the paramagnetic state. In order to investigate two-fluid behavior and the onset and physical origin of different long range ordered ground states in heavy electron materials, we have extended Knight shift measurements to URu${}_2$Si${}_2$, CeIrIn${}_5$ and CeRhIn${}_5$. In CeRhIn${}_5$ we find that the antiferromagnetic order is preceded by a relocalization of the Kondo liquid, providing independent evidence for a local moment origin of antiferromagnetism. In URu${}_2$Si${}_2$ the hidden order is shown to emerge directly from the Kondo liquid and so is not associated with local moment physics. Our results imply that the nature of the ground state is strongly coupled with the hybridization in the Kondo lattice in agreement with phase diagram proposed by Yang and Pines.

9 pages, 13 figures

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Cited by in corpus (43)

• Emergent states in heavy electron materials
• Two-Fluid Model for Heavy Electron Physics
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• Crossover in the magnetic response of single-crystalline Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ and Lifshitz critical point evidenced by Hall effect measurements
• Infrared properties of heavy-fermions: evolution from weak to strong hybridizations
• Universal Knight shift anomaly in the Periodic Anderson model
• Thermodynamic signatures of short-range magnetic correlations in UTe${}_2$
• Toward a New Microscopic Framework for Kondo Lattice Materials
• Quantum critical scaling and fluctuations in Kondo lattice materials
• The Emergence of Superconductivity in Heavy Electron Materials
• Evolution of hyperfine parameters across a quantum critical point in CeRhIn${}_5$
• Quantum critical behavior in heavy electron materials
• Quasi-2D magnetic correlations in Ni${}_2$P${}_2$S${}_6$ probed by ${}^{31}$P NMR
• Anomalous Hall effect in heavy electron materials
• A unified theory of ferromagnetic quantum phase transitions in heavy fermion metals
• Nuclear magnetic resonance studies of pseudospin fluctuations in URu${}_2$Si${}_2$
• Orbitally defined field-induced electronic state in a Kondo lattice
• Quantum critical scaling and superconductivity in heavy electron materials
• Inhomogeneous Knight shift in vortex cores of superconducting FeSe
• Coherence Temperature in the Diluted Periodic Anderson Model
• Determinant Quantum Monte Carlo Study of Exhaustion in the Periodic Anderson Model
• Hyperfine Couplings as a Probe of Orbital Anisotropy in Heavy Fermion Materials
• Itinerant to relocalized transition of f electrons in the Kondo insulator CeRu4Sn6
• Kondo screening and beyond: an x-ray absorption and dichroism study of CePt${}_5$/Pt(111)
• Impurities near an Antiferromagnetic-Singlet Quantum Critical Point
• NMR investigation of the Knight shift anomaly in CeIrIn5 at high magnetic fields
• Nonlocal Kondo effect and two-fluid picture revealed in an exactly solvable model
• ${\mu }^{+}$ Knight Shift in UTe${}_2$: Evidence for Relocalization in a Kondo Lattice
• NMR Investigation of antiferromagnetism and coherence in URu${}_2$Si${}_{2-x}$P${}_x$
• ${}^{75}$As NMR study of the antiferromagnetic Kondo lattice compound CeNiAsO
• An emerging global picture of heavy fermion physics
• Universal scaling in the Knight shift anomaly of doped periodic Anderson model
• Bosonic Kondo-Hubbard model
• Relocalization of Uranium 5f Electrons in Antiferromagnetic Heavy Fermion Superconductor UPd${}_2$Al${}_3$: Insights from Angle-Resolved Photoemission Spectroscopy
• Magnetic structure and Kondo lattice behavior in CeVGe${}_3$: an NMR and neutron scattering study
• 29Si nuclear magnetic resonance study of URu2Si2 under pressure
• Temperature dependence of NMR Knight shift in pnictides: proximity to a van Hove singularity
• NMR Evidence of anisotropic Kondo liquid behavior in CeIrIn${}_5$
• Nuclear magnetic resonance investigation of the heavy fermion system Ce${}_2$CoAl${}_7$Ge${}_4$
• Site Specific Knight Shift Measurements of the Dilute Kondo lattice System Ce${}_{1-x}$La${}_x$CoIn${}_5$
• Universal behavior in the Nernst effect of heavy fermion materials
• ${}^{27}$Al NMR study of the magnetic Weyl semimetal CeAlGe