Singular Effects of Impurities near the Ferromagnetic Quantum-Critical Point

Abstract

Systematic theoretical results for the effects of a dilute concentration of magnetic impurities on the thermodynamic and transport properties in the region around the quantum critical point of a ferromagnetic transition are obtained. In the quasi-classical regime, the dynamical spin fluctuations enhance the Kondo temperature. This energy scale decreases rapidly in the quantum fluctuation regime, where the properties are those of a line of critical points of the multichannel Kondo problem with the number of channels increasing as the critical point is approached, except at unattainably low temperatures where a single channel wins out.

arXiv comment4 pages, 2 figures

References in corpus (5)

• Singular Fermi Liquids
• Huge Enhancement of Impurity Scattering due to Critical Valence Fluctuations in a Ce-Based Heavy Electron System
• Local Defect in Metallic Quantum Critical Systems
• Enhanced Impurity Scattering due to Quantum Critical Fluctuations
• Only Fermi-Liquids are Metals

Cited by in corpus (17)

• Singular Fermi Liquids
• Disorder-Driven Non-Fermi Liquid Behavior of Correlated Electrons
• Quantum critical properties of the Bose-Fermi Kondo Model in a large-N limit
• Quantum-Critical Fluctuations in 2D Metals: Strange Metals and Superconductivity in Antiferromagnets and in Cuprates
• Quantum Criticality in Ferromagnetic Single-Electron Transistors
• Magnetic properties of Gd_xY_{1-x}Fe_2Zn_{20}: dilute, large, $\text{S}$ moments in a nearly ferromagnetic Fermi liquid
• A Kondo route to spin inhomogeneities in the honeycomb Kitaev model
• Interaction-induced metallicity in a two-dimensional disordered non-Fermi liquid
• Anomalous Hall effect in NiPt thin films
• Crossover Temperature from Non-Fermi Liquid to Fermi Liquid Behavior in Two Types of Impurity Kondo Model
• Interplay between the mesoscopic Stoner and Kondo effects in quantum dots
• Magnetic droplets in a metal close to a ferromagnetic quantum critical point
• Smeared nematic quantum phase transitions due to rare-region effects in inhomogeneous systems
• A Gallery of Soft Modes: Theory and Experiment at a Ferromagnetic Quantum Phase Transition
• Disorder Effects on Competition between Antiferromagnetism and Superconductivity in Cuprate Superconductors through the Enhancement in Charge Susceptibility
• Quantum-critical transport in marginal Fermi liquids
• Ultraviolet/infrared mixing-driven suppression of Kondo screening in the antiferromagnetic quantum critical metal