Susceptibility inhomogeneity and non-Fermi-liquid behavior in Ce(Ru0.5Rh0.5)2Si2
Abstract
Magnetic susceptibility and muon spin rotation (μSR) experiments have been carried out to study the effect of structural disorder on the non-Fermi-liquid (NFL) behavior of the heavy-fermion alloy Ce(Ru0.5Rh0.5)2Si2. Analysis of the bulk susceptibility in the framework of disorder-driven Griffiths-phase and Kondo-disorder models for NFL behavior yields relatively narrow distributions of characteristic spin-fluctuation energies, in agreement with μSR linewidths that give the inhomogeneous spread in susceptibility. μSR and NMR data both indicate that disorder explains the ``nearly NFL'' behavior observed above ~2 K, but does not dominate the NFL physics found at low temperatures and low magnetic fields.
- Publication:
-
Physical Review B
- Pub Date:
- May 2002
- DOI:
- 10.1103/PhysRevB.65.184401
- arXiv:
- arXiv:cond-mat/0109534
- Bibcode:
- 2002PhRvB..65r4401M
- Keywords:
-
- 75.30.Mb;
- 71.27.+a;
- 76.60.Cq;
- Valence fluctuation Kondo lattice and heavy-fermion phenomena;
- Strongly correlated electron systems;
- heavy fermions;
- Chemical and Knight shifts;
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 6 pages, 4 figures, REVTeX, submitted to Phys. Rev. B