4f-electron localization in CexLa1-xMIn5 with M = Co, Rh, or Ir
PHYSICAL REVIEW LETTERS, vol.93, no.18, 2004 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 93 Issue: 18
- Publication Date: 2004
- Doi Number: 10.1103/physrevlett.93.186405
- Journal Name: PHYSICAL REVIEW LETTERS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Karadeniz Technical University Affiliated: No
Abstract
de Haas-van Alphen measurements on CexLa1-xMIn5 yield contrasting types of behavior that depend on whether M = Co and Ir or M = Rh. A stronger x-dependent scattering in the case of M = Co and Ir is suggestive of a stronger relative coupling, J/W, of the conduction electrons to the 4f electrons, which would then account for the development of a heavy composite Fermi-liquid state as x --> 1. The failure of a composite Fermi-liquid state to form for any x in the case of M = Rh is shown to be inconsistent with theoretical models that propose antiferromagnetism to result from spin-density-wave formation.