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Type: Artigo de periódico
Title: ESR of Gd3+ in the Kondo-lattice compound YbAgCu4 and its reference compounds RAgCu4 (R = Y,Lu)
Author: Pagliuso, PG
Rettori, C
Oseroff, SB
Sarrao, J
Fisk, Z
Cornelius, A
Hundley, MF
Abstract: Low-temperature (T<30 K) electron-spin-resonance (ESR) experiments of Gd3+ diluted in the Kondo-lattice compound YbAgCu4, and its reference compounds YAgCu4 and LuAgCu4, 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 Gd3+ local moment and the conduction electrons(c-e) is c-e wave vector dependent in all three compounds.
Country: EUA
Editor: American Physical Soc
Citation: Physical Review B. American Physical Soc, v. 56, n. 14, n. 8933, n. 8937, 1997.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.56.8933
Date Issue: 1997
Appears in Collections:Unicamp - Artigos e Outros Documentos

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