Doniach Phase Diagram, Revisited: From Ferromagnet to Fermi Liquid in Pressurized CeRu[sub 2] Ge[sub 2]

Journal Article · Thu Apr 01 00:00:00 EST 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.82.2963· OSTI ID:6076990

Suellow, S; Aronson, M C ^[1]; Rainford, B D ^[2]; Haen, P ^[3]

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1. Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1120 (United States)
2. Department of Physics, Southampton University, SO17 1BJ (United Kingdom)
3. Centre de Recherches sur les Tres Basses Temperature CNRS, Grenoble (France)

We present the resistivity and ac susceptibility of CeRu[sub 2]Ge [sub 2] at pressures p up to 130thinspthinspkbar. Pressure transforms the system from a ferromagnet into a nonordering Fermi liquid (FL). The suppression of magnetic order at p[sub c]=67 kbar is accompanied by non-Fermi liquid (NFL) behavior. By comparing our results to isoelectronic CeRu[sub 2]( Ge[sub 1[minus]x]Si [sub x])[sub 2] we derive a unified hybridization J phase diagram for the entire material class. The phase diagram is characterized by the FL and Kondo energy scales T[sub FL] and T[sub K] , with the NFL behavior appearing at T[sub FL]=0 K , while T[sub K] remains finite and a smoothly increasing function of J . [copyright] [ital 1999] [ital The American Physical Society]

• DOE Contract Number: FG02-94ER45526
• OSTI ID: 6076990
• Journal Information: Physical Review Letters, Vol. 82:14; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERIUM COMPOUNDS
ELECTRIC CONDUCTIVITY
FERMI GAS
FERROMAGNETIC MATERIALS
GERMANIUM COMPOUNDS
KONDO EFFECT
MAGNETIC SUSCEPTIBILITY
PHASE DIAGRAMS
PRESSURE DEPENDENCE
RUTHENIUM COMPOUNDS
VERY HIGH PRESSURE
DIAGRAMS
ELECTRICAL PROPERTIES
FLUIDS
GASES
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MATERIALS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360102* - Metals & Alloys- Structure & Phase Studies