Work

Precursor of non-Fermi liquid behaviour in the one-dimensional periodic Anderson model with disorder

Year: 1999

Type: article

Abstract: We have studied the one-dimensional periodic, symmetric Anderson model at half filling in the presence of disorder using finite-temperature quantum Monte Carlo techniques. We have examined for the first time the disorder both in hybridization between the local f-orbitals and the conduction electrons and in the local f-site energy, using a uniform distribution of width . The f-orbital local magnetic moment, the uniform magnetic susceptibility, the charge compressibility, and the nearest-neighbour magnetic correlation function have been calculated as a function of the disorder distribution width . We find that the disorder in hybridization has a dramatic effect on the low-temperature magnetic properties exhibiting a non-Fermi-liquid behaviour, and that for the range of temperature studied the magnetic susceptibility can be scaled by a power law with an exponent that is in agreement with recent experiments. On the other hand, disorder in the local f-orbital energy level does not show a nonFermi liquid behaviour.

Source: Philosophical Magazine Letters

DOI: 10.1080/095008399176977

Authors: Feng Chen, Nicholas Kioussis

Institution: California State University, Northridge

Language: English

Topic: Rare-earth and actinide compounds

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, California State University, Northridge, Division of Materials Research

Award: RUI: Hybridization - Induced Magnetism in Correlated Electron Systems