Evolution of hyperfine parameters across a quantum critical point in CeRhIn${}_5$

Abstract

We report Nuclear Magnetic Resonance (NMR) data for both the In(1) and In(2) sites in the heavy fermion material CeRhIn${}_5$ under hydrostatic pressure. The Knight shift data reveal a suppression of the hyperfine coupling to the In(1) site as a function of pressure, and the electric field gradient, ${\nu }_{\alpha \alpha }$, at the In(2) site exhibits a change of slope, $d{\nu }_{\alpha \alpha }/dP$, at $P_{c1}=1.75$ GPa. These changes to these coupling constants reflect alterations to the electronic structure at the quantum critical point.

5 pages, 6 figures, to appear in Phys. Rev. B

References in corpus (12)

• Quantum Criticality in Heavy Fermion Metals
• Quantum criticality
• Hidden Magnetism and Quantum Criticality in the Heavy Fermion Superconductor CeRhIn5
• Modelling the Localized to Itinerant Electronic Transition in the Heavy Fermion System CeIrIn5
• Universal Behavior in Heavy Electron Materials
• Long range order and two-fluid behavior in heavy electron materials
• Nuclear magnetic resonance in the heavy fermion superconductors
• Emergence of Orbital Nematicity in the Tetragonal Phase of BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• The magnitude of the magnetic exchange interaction in the heavy fermion antiferromagnet CeRhIn${}_5$
• Universal Knight shift anomaly in the Periodic Anderson model
• Magnetic excitations in Kondo liquid: Superconductivity and Hidden Magnetic Quantum Critical Fluctuations
• A predictive standard model for heavy electron systems

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