Artículos de revistas
ESR of Gd3+ in the intermediate-valence YbInCu4 and its reference compound YInCu4
Registro en:
Physical Review B. American Physical Soc, v. 55, n. 2, n. 1016, n. 1020, 1997.
0163-1829
WOS:A1997WD78900055
10.1103/PhysRevB.55.1016
Autor
Rettori, C
Oseroff, SB
Rao, D
Pagliuso, PG
Barberis, GE
Sarrao, J
Fisk, Z
Hundley, M
Institución
Resumen
Electron-spin-resonance (ESR) experiments on Gd3+ in the intermediate-valence phase (T < T-v) of YbInCu4 and in its reference compound YInCu4 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 Gd3+ local moments and the conduction electrons (c-e) is c-e wave-vector dependent in both compounds. 55 2 1016 1020