Dynamics and transport properties of heavy fermions: theory

Abstract

The paramagnetic phase of heavy fermion systems is investigated, using a non-perturbative local moment approach to the asymmetric periodic Anderson model within the framework of dynamical mean field theory. The natural focus is on the strong coupling Kondo-lattice regime wherein single-particle spectra, scattering rates, dc transport and optics are found to exhibit w/w_L,T/w_L scaling in terms of a single underlying low-energy coherence scale w_L. Dynamics/transport on all relevant (w,T)-scales are encompassed, from the low-energy behaviour characteristic of the lattice coherent Fermi liquid, through incoherent effective single-impurity physics likewise found to arise in the universal scaling regime, to non-universal high-energy scales; and which description in turn enables viable quantitative comparison to experiment.

arXiv comment27 pages, 12 figures

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Cited by in corpus (24)

• Electronic Structure Calculations with Dynamical Mean-Field Theory: A Spectral Density Functional Approach
• Electron Correlation Driven Heavy-Fermion Formation in LiV2O4
• Common non-Fermi liquid phases in quantum impurity physics
• Infrared properties of heavy-fermions: evolution from weak to strong hybridizations
• Emergent Coherent Lattice Behavior in Kondo Nanosystems
• Origin of infrared peaks in the optical conductivity of ytterbium compounds
• A local moment approach to the degenerate Anderson impurity model
• Enhancement of thermal transport in the degenerate periodic Anderson model
• From mixed valence to the Kondo lattice regime
• Fragility of the Kondo insulating gap against disorder: relevance to recent puzzles in topological Kondo insulators
• Dramatic change of photoexcited quasiparticle relaxation dynamics across Yb valence state transition in YbInCu${}_4$
• Mott transitions in the Periodic Anderson Model
• Spectral changes in layered $f$-electron systems induced by Kondo hole substitution in the boundary-layer
• Variational local moment approach: from Kondo effect to Mott transition in correlated electron systems
• Zero temperature dynamics of the Hubbard model in infinite dimensions: A local moment approach
• Non-Fermi liquid behaviour from dynamical effects of impurity scattering in correlated Fermi liquids
• Kondo-hole substitution in heavy fermions: dynamics and transport
• Interaction effects in mixed-valent Kondo insulators
• The Anderson impurity model with a narrow-band host: from orbital physics to the Kondo effect
• Emergent soft-gap Anderson models at quantum criticality in a lattice Hamiltonian within dynamical mean field theory
• Magnetoresistance in paramagnetic heavy fermion metals
• A spin-dependent local moment approach to the Anderson impurity model
• Universal Mott quantum criticality in a modified periodic Anderson model
• Dynamics of valence fluctuations in the extended periodic Anderson model