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Susceptibility inhomogeneity and non-Fermi liquid behavior in nominally ordered UCu_4Pd | | D. E. MacLaughlin
; R. H. Heffner
; G. J. Nieuwenhuys
; G. M. Luke
; Y. Fudamoto
; Y. J. Uemura
; R. Chau
; M. B. Maple
; B. Andraka
; | | Date: |
30 Apr 1998 | | Subject: | Strongly Correlated Electrons | cond-mat.str-el | | Affiliation: | 1,2), R. H. Heffner , G. J. Nieuwenhuys , G. M. Luke , Y. Fudamoto , Y. J. Uemura , R. Chau , M. B. Maple , B. Andraka ( Los Alamos National Laboratory, Univ. of California Riverside, Kamerlingh Onnes Lab. Leiden. Univ., Columbia Univ., Univ. of | | Abstract: | Muon spin rotation experiments on a stoichiometric sample of the non-Fermi liquid (NFL) heavy-fermion compound UCu_4Pd, in which recent neutron Bragg scattering measurements are consistent with an ordered structure, indicate that the U-ion susceptibility is strongly inhomogeneous at low temperatures. This suggests that residual disorder dominates NFL behavior. The data also indicate a short correlation length (lesssim 1 lattice spacing) for this inhomogeneity and a rapid low-temperature U-moment relaxation rate (gtrsim 10^{12} s^{-1}), which constrain cluster-based models of NFL behavior. | | Source: | arXiv, cond-mat/9804329 | | Services: | Forum | Review | PDF | Favorites | |
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