Universal Knight shift anomaly in the Periodic Anderson model

Abstract

We report a Determinant Quantum Monte Carlo investigation which quantifies the behavior of the susceptibility and the entropy in the framework of the periodic Anderson model (PAM), focussing on the evolution with different degree of conduction electron (c) -local moment (f) hybridization. These results capture the behavior observed in several experiments, including the universal behavior of the NMR Knight shift anomaly below the crossover temperature, $T^{\ast }$. We find that $T^{\ast }$ is a measure of the onset of c-f correlations and grows with increasing hybridization. These results suggest that the NMR Knight shift and spin-lattice relaxation rate measurements in non-Fermi liquid materials are strongly influenced by temperature-dependent hybridization processes. Our results provide a microscopic basis for the phenomenological two-fluid model of Kondo lattice behavior, and its evolution with pressure and temperature.

5 pages, 4 figures

References in corpus (6)

• Quantum criticality
• Hidden Magnetism and Quantum Criticality in the Heavy Fermion Superconductor CeRhIn5
• Visualizing heavy fermions emerging in a quantum critical Kondo lattice
• 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

Cited by in corpus (6)

• Interplay of localized and itinerant behavior in the one-dimensional Kondo-Heisenberg model
• Determinant Quantum Monte Carlo Study of Exhaustion in the Periodic Anderson Model
• Kondo screening and beyond: an x-ray absorption and dichroism study of CePt${}_5$/Pt(111)
• Impurities near an Antiferromagnetic-Singlet Quantum Critical Point
• Site Specific Knight Shift Measurements of the Dilute Kondo lattice System Ce${}_{1-x}$La${}_x$CoIn${}_5$
• Tunable magnetism of a hexagonal Anderson droplet on the triangular lattice