ESR of Gd{sup 3+} in the intermediate-valence YbInCu{sub 4} and its reference compound YInCu{sub 4}

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.55.1016· OSTI ID:439045

Rettori, C; Oseroff, S B; Rao, D ^[1]; Pagliuso, P G; Barberis, G E ^[2]; Sarrao, J; Fisk, Z ^[3]; Hundley, M ^[4]

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1. San Diego State University, San Diego, California 92182 (United States)
2. Instituto de Fisica Gleb Wataghin, UNICAMP, 13083-970, Campinas-SP (Brazil)
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)

Electron-spin-resonance (ESR) experiments on Gd{sup 3+} in the intermediate-valence phase (T{lt}T{sub v}) of YbInCu{sub 4} and in its reference compound YInCu{sub 4} are interpreted in terms of an enhanced density of states at the Fermi level for the Yb-based compound. The Korringa rate and g shift measured in ESR and the susceptibility data allowed us to extract the electron-electron exchange enhancement factor {alpha} for the Yb-based compound. The exchange interaction between the Gd{sup 3+} local moments and the conduction electrons (c-e) is c-e wave-vector dependent in both compounds. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 439045
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 2 Vol. 55; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

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