Citation
N. Harrison et al., Mixed valence of U determined using the de Haas-van Alphen effect: Application to UxTh1-xBe13 - art. no. 081101, PHYS REV B, 6308(8), 2001, pp. 1101
Citations number
26
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829
→ ACNP
Volume
6308
Issue
8
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010215)6308:8<1101:MVOUDU>2.0.ZU;2-E
Abstract
de Haas-van Alphen measurements made on UxTh1-xBe13 for x less than or equa
l to 0.1 reveal that U enters the ThBe13 lattice as a mixed valent impurity
of average valence similar to4.7, evinced by topological changes in the Fe
rmi surface with x. This implies that U exists in the tetravalent 5f(2) con
figuration when diluted and that the strong correlations in UBe13 involve 5
f(2)-->5f(1) transitions. Possible scenarios for the nature of the UxTh1-xB
e13 ground state are discussed.