Charge-Doping driven Evolution of Magnetism and non-Fermi-Liquid Behavior in the Filled Skutterudite CePt4Ge12-xSbx
Strongly Correlated Electrons
2012-12-06 v1 Materials Science
Abstract
The filled-skutterudite compound CePt4Ge12 is situated close to the border between intermediate-valence of Ce and heavy-fermion behavior. Substitution of Ge by Sb drives the system into a strongly correlated and ultimately upon further increasing the Sb concentration into an antiferromagnetically ordered state. Our experiments evidence a delicate interplay of emerging Kondo physics and the formation of a local 4f moment. An extended non-Fermi-liquid region, which can be understood in the framework of a Kondo-disorder model, is observed. Band-structure calculations support the conclusion that the physical properties are governed by the interplay of electron supply via Sb substitution and the concomitant volume effects.
Keywords
Cite
@article{arxiv.1209.3284,
title = {Charge-Doping driven Evolution of Magnetism and non-Fermi-Liquid Behavior in the Filled Skutterudite CePt4Ge12-xSbx},
author = {M. Nicklas and S. Kirchner and R. Borth and R. Gumeniuk and W. Schnelle and H. Rosner and H. Borrmann and A. Leithe-Jasper and Yu. Grin and F. Steglich},
journal= {arXiv preprint arXiv:1209.3284},
year = {2012}
}
Comments
5 pages, 3 Figure