NDLI: Six closely related YbT2Zn20 (T = Fe, Co, Ru, Rh, Os, Ir) heavy fermion compounds with large local moment degeneracy

Content Provider	PubMed Central
Author	Torikachvili, M. S. Jia, S. Mun, E. D. Hannahs, S. T. Black, R. C. Neils, W. K. Martien, Dinesh Bud'ko, S. L. Canfield, P. C.
Copyright Year	2007
Abstract	Heavy fermion compounds represent one of the most strongly correlated forms of electronic matter and give rise to low temperature states that range from small moment ordering to exotic superconductivity, both of which are often in close proximity to quantum critical points. These strong electronic correlations are associated with the transfer of entropy from the local moment degrees of freedom to the conduction electrons, and, as such, are intimately related to the low temperature degeneracy of the (originally) moment bearing ion. Here we report the discovery of six closely related Yb-based heavy fermion compounds, YbT2Zn20, that are members of the larger family of dilute rare earth bearing compounds: RT2Zn20 (T = Fe, Co, Ru, Rh, Os, Ir). This discovery doubles the total number of Yb-based heavy fermion materials. Given these compounds' dilute nature, systematic changes in T only weakly perturb the Yb site and allow for insight into the effects of degeneracy on the thermodynamic and transport properties of these model correlated electron systems.
Related Links	http://dx.doi.org/10.1073/pnas.0702757104
Ending Page	9963
Page Count	4
Starting Page	9960
File Format	PDF
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	24
Volume Number	104
Language	English
Publisher	National Academy of Sciences
Publisher Date	2007-06-12
Access Restriction	Open
Rights Holder	National Academy of Sciences
Subject Keyword	General Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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