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.
Cite
@article{arxiv.cond-mat/0505148,
title = {Dynamics and transport properties of heavy fermions: theory},
author = {David E Logan and N S Vidhyadhiraja},
journal= {arXiv preprint arXiv:cond-mat/0505148},
year = {2009}
}
Comments
27 pages, 12 figures