Nonpareil Yb Behavior in YbMn 6 Ge 6-x Sn x

Abstract : We investigate the temperature dependence of the Yb valence in YbMn 6 Ge 1:8 Sn 4:2 and YbMn 6 Ge 1:6 Sn 4:4 using resonant inelastic x-ray scattering experiments. Yb is found to be in an intermediate valent state in the whole investigated temperature range (10–450 K). We thus prove that the unusually high magnetic ordering temperature of Yb ( 60 and 90 K for x ¼ 4:2 and 4.4, respectively) involves an intermediate valent Yb, an unprecedentedly observed phenomenon. Further, an anomalous increase in the Yb valence is observed upon cooling. A scenario is proposed to explain this unusual behavior. It is based on the presence of magnetically ordered Mn moments and on an Anderson Hamiltonian with a Zeeman term modeling the magnetic interactions.
Type de document :
Article dans une revue
Physical Review Letters, American Physical Society, 2013, 111 (9), pp.096402. 〈10.1103/PhysRevLett.111.096402〉
Liste complète des métadonnées

Littérature citée [18 références]  Voir  Masquer  Télécharger

https://hal.univ-lorraine.fr/hal-01430771
Contributeur : Daniel Malterre <>
Soumis le : mardi 10 janvier 2017 - 11:30:29
Dernière modification le : mardi 30 janvier 2018 - 15:06:01
Document(s) archivé(s) le : mardi 11 avril 2017 - 14:10:15

Fichier

Mazet-Prl2013.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

Citation

Thomas Mazet, Daniel Malterre, Michel François, Claudia Dallera, G Grioni, et al.. Nonpareil Yb Behavior in YbMn 6 Ge 6-x Sn x. Physical Review Letters, American Physical Society, 2013, 111 (9), pp.096402. 〈10.1103/PhysRevLett.111.096402〉. 〈hal-01430771〉

Partager

Métriques

Consultations de la notice

62

Téléchargements de fichiers

49