Evidence for Anisotropic Kondo Behavior in Ce{sub 0.8}La{sub 0.2}Al{sub 3}

Journal Article · Mon Mar 06 00:00:00 EST 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.2211· OSTI ID:20215646

Goremychkin, E A ^[1]; Osborn, R ^[1]; Rainford, B D ^[2]; Murani, A P ^[3]

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1. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States)
2. Department of Physics, University of Southampton, Southampton SO17 1BJ, (United Kingdom)
3. Institut Laue-Langevin, BP 156, F-38042 Grenoble Cedex 9, (France)

We have performed an inelastic neutron scattering study of the low energy spin dynamics of the heavy fermion compound Ce{sub 0.8}La {sub 0.2}Al{sub 3} as a function of temperature and external pressure up to 5 kbar. At temperatures below 3 K, the magnetic response transforms from a quasielastic form, common to many heavy fermion systems, to a single well-defined inelastic peak, which is extremely sensitive to external pressure. The scaling of the spin dynamics and the thermodynamic properties are in agreement with the predictions of the anisotropic Kondo model. (c) 2000 The American Physical Society.

• OSTI ID: 20215646
• Journal Information: Physical Review Letters, Vol. 84, Issue 10; Other Information: PBD: 6 Mar 2000; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CERIUM COMPOUNDS
LANTHANUM COMPOUNDS
ALUMINIUM COMPOUNDS
KONDO EFFECT
INELASTIC SCATTERING
SPIN FLIP
SCALING LAWS
THERMODYNAMIC PROPERTIES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
PRESSURE DEPENDENCE
HIGH PRESSURE
VERY HIGH PRESSURE
EXPERIMENTAL DATA