ESR of Gd{sup 3+} in the Kondo-lattice compound YbAgCu{sub 4} and its reference compounds RAgCu{sub 4} (R=Y,Lu)

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.8933· OSTI ID:632636

Pagliuso, P G; Rettori, C ^[1]; Oseroff, S B ^[2]; Sarrao, J; Fisk, Z ^[3]; Cornelius, A; Hundley, M F ^[4]

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1. Instituto de Fisica Gleb Wataghin, UNICAMP, 13083-970, Campinas-SP (Brazil)
2. San Diego State University, San Diego, California 92182 (United States)
3. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306 (United States)
4. Los Alamos National Laboratories, Los Alamos, New Mexico 87545 (United States)

Low-temperature (T{lt}30thinspK) electron-spin-resonance (ESR) experiments of Gd{sup 3+} diluted in the Kondo-lattice compound YbAgCu{sub 4} and its reference compounds YAgCu{sub 4} and LuAgCu{sub 4} are interpreted in terms of an enhanced density of states at the Fermi level for the Yb-based compound. The results of susceptibility and ESR (Korringa rate and g-shift) measurements show negligible electron-electron exchange enhancement for all the studied compounds. The exchange interaction between the Gd{sup 3+} local moment and the conduction electrons (c-e) is c-e wave vector dependent in all three compounds. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 632636
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 14 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER ALLOYS
DILUTE ALLOYS
ELECTRON SPIN RESONANCE
ENERGY-LEVEL DENSITY
FERMI LEVEL
GADOLINIUM ALLOYS
GADOLINIUM IONS
KONDO EFFECT
LUTETIUM ALLOYS
MAGNETIC MOMENTS
MAGNETIC SUSCEPTIBILITY
SILVER ALLOYS
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
YTTERBIUM ALLOYS