Correlation between the valence state of cerium and the magnetic transition in Ce(Ru sub(1-x) Fe sub(x)) sub(2) Al sub(10) studied by resonant x-ray emission spectroscopy

The correlation between the 4f-conduction electron (c-f) hybridization and the transition temperature T sub(0) into the unconventional antiferromagnetically (AFM) ordered state in Ce(Ru sub(1-x) Fe sub(x)) sub(2)Al sub(10) has been investigated. The impact of pressure on the crystal structure and th...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2014-03, Vol.89 (12)
Main Authors: Zekko, Yumiko, Yamamoto, Yoshiya, Yamaoka, Hitoshi, Tajima, Fumisato, Nishioka, Takashi, Strigari, Fabio, Severing, Andrea, Lin, Jun-Fu, Hiraoka, Nozomu, Ishii, Hirofumi, Tsuei, Ku-Ding, Mizuki, Jun'ichiro
Format: Article
Language:English
Subjects:
Atomic force microscopy
Condensed matter
Correlation analysis
Diffraction
Emission spectroscopy
Phase diagrams
Transition temperature
X-rays
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Summary:The correlation between the 4f-conduction electron (c-f) hybridization and the transition temperature T sub(0) into the unconventional antiferromagnetically (AFM) ordered state in Ce(Ru sub(1-x) Fe sub(x)) sub(2)Al sub(10) has been investigated. The impact of pressure on the crystal structure and the electronic structure has been measured using x-ray diffraction and resonant x-ray emission spectroscopy at the Ce L sub(3) absorption edge in a diamond anvil cell. Our results show that the lattice spacings imply some correlation with the disappearance of T sub(0). Analyses of the measured valence states, however, show only a weak correlation with the corresponding critical disappearance of the AFM order within experimental errors. Our results may be explained by a scenario based on the Kondo-Heisenberg model beyond the conventional Doniach phase diagram.
ISSN:1098-0121
1550-235X