Disorder, inhomogeneity and spin dynamics in f-electron non-Fermi liquid systems
Abstract
Muon spin rotation and relaxation (SR) experiments have yielded evidence that structural disorder is an important factor in many f-electron-based non-Fermi-liquid (NFL) systems. Disorder-driven mechanisms for NFL behaviour are suggested by the observed broad and strongly temperature-dependent SR (and NMR) linewidths in several NFL compounds and alloys. Local disorder-driven theories (Kondo disorder, Griffiths-McCoy singularity) are, however, not capable of describing the time-field scaling seen in muon spin relaxation experiments, which suggest cooperative and critical spin fluctuations rather than a distribution of local fluctuation rates. A strong empirical correlation is established between electronic disorder and slow spin fluctuations in NFL materials
Keywords
Cite
@article{arxiv.cond-mat/0404118,
title = {Disorder, inhomogeneity and spin dynamics in f-electron non-Fermi liquid systems},
author = {D. E. MacLaughlin and R. H. Heffner and O. O. Bernal and K. Ishida and J. E. Sonier and G. J. Nieuwenhuys and M. B. Maple and G R Stewart},
journal= {arXiv preprint arXiv:cond-mat/0404118},
year = {2009}
}
Comments
24 pages, 15 figures, submitted to J. Phys.: Condens. Matter