High-pressure study of non-Fermi liquid and spin-glass-like behavior in CeRhSn

• Published in: Journal of physics. Condensed matter Vol. 24; no. 27; p. 275601
• Main Authors: Zocco, D A, lebarski, A, Maple, M B
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 11.07.2012; Institute of Physics
• Subjects: Asymptotic properties; Cesium - chemistry; Condensed matter; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Electric Impedance; Electrical resistivity; Electron states; Exact sciences and technology; Glass - chemistry; Liquids; Magnetic properties and materials; Magnetically ordered materials: other intrinsic properties; Physics; Pressure; Pressure dependence; Quantum Theory; Rhodium - chemistry; Spin glass; Strongly correlated systems; heavy fermions; Temperature; Temperature dependence; Tin - chemistry; Valence fluctuation, kondo lattice, and heavy-fermion phenomena; Tin alloys; Spin glasses; Non Fermi liquid; Electrical conductivity; Pressure effects; Cerium alloys; Rhodium alloys; Heavy fermions; Rare earth alloys; High pressure
• ISSN: 0953-8984; 1361-648X
• DOI: 10.1088/0953-8984/24/27/275601

We present measurements of the temperature dependence of the electrical resistivity ρ(T) of CeRhSn up to ∼27 kbar. At low temperatures, ρ(T) varies linearly with T for all pressures, indicating non-Fermi liquid behavior. Below Tf ∼ 6 K, ρ(T) deviates from a linear dependence. We found that the low-T feature centered at T = Tf shows a pressure dependence ∂Tf ∂P 30 mK kbar−1 which is typical of canonical spin glasses. This interplay between spin-glass-like and non-Fermi liquid behavior was observed in both CeRhSn and a Ce0.9La0.1RhSn alloy.