Changes in non-Fermi liquid behavior with annealing due to lattice disorder in UCu_4Pd

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The magnetic and electronic properties of non-Fermi liquid UCu_4Pd depend on annealing conditions. Local structural changes due to this annealing are reported from U L_III- and Pd K-edge x-ray absorption fine-structure measurements. In particular, annealing decreases the fraction of Pd atoms on nominally Cu 16e sites and the U-Cu pair-distance distribution width. This study provides quantitative information on the amount of disorder in UCu_4Pd and allows an assessment of its possible importance to the observed non-Fermi liquid behavior.
4 pages, 3 EPS figure, PRB (Rapid) in press

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/20112

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0210275
 http://arxiv.org/abs/cond-mat/0210275

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arXiv