Volume 40, Number 3, November I 1997
|Page(s)||245 - 250|
|Published online||01 September 2002|
Non–Fermi-liquid scaling in UCu5-xPdx (x=1, 1.5): A phenomenological description
The Harrison M. Randall Laboratory of Physics, University of
Michigan, Ann Arbor MI 48109-1120, USA
2 Department of Physics, University of California at San Diego, La Jolla, California, 92093 USA
3 Department of Physics, University of Oxford, 1 Keble Road, Oxford, UK
4 Materials Sciences Division, Argonne National Laboratory Argonne IL 60439-4845 USA
Accepted: 18 September 1997
We present a unified description of the imaginary part of the dynamical magnetic susceptibility and measurements of the static susceptibility and electrical resistivity in the uranium intermetallics (x=1, 1.5). For temperatures T and excitation energies ω in the range , , our analysis demonstrates that the dynamics of isolated uranium ions are responsible for the observed temperature and frequency scaling, although interion interactions may become important at lower temperatures and frequencies. We derive a strict criterion for single-ion scaling in the form of a universal scaling function, providing a model-independent description of the compiled experimental data.
PACS: 05.70.Jk – Critical point phenomena / 75.20.Hr – Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions / 75.40.Gb – Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.)
© EDP Sciences, 1997
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