Pd/Cu Site Interchange and Non-Fermi-Liquid Behavior in UCu_4Pd
Strongly Correlated Electrons
2009-10-31 v1
Abstract
X-ray-absorption fine-structure measurements of the local structure in UCu_4Pd are described which indicate a probable lattice-disorder origin for non-Fermi-liquid behavior in this material. Short Pd-Cu distances are observed, consistent with 24 +/- 3% of the Pd atoms occupying nominally Cu sites. A "Kondo disorder" model, based on the effect on the local Kondo temperature T_K of this interchange and some additional bond-length disorder, agrees quantitatively with previous experimental susceptibility data, and therefore also with specific heat and magnetic resonance experiments.
Keywords
Cite
@article{arxiv.cond-mat/9809316,
title = {Pd/Cu Site Interchange and Non-Fermi-Liquid Behavior in UCu_4Pd},
author = {C. H. Booth and D. E. MacLaughlin and R. H. Heffner and R. Chau and M. B Maple and G. H. Kwei},
journal= {arXiv preprint arXiv:cond-mat/9809316},
year = {2009}
}
Comments
4 pages, 3 PostScript figures, to be published in PRL