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Kondo Screening and Magnetic Ordering in Frustrated UNi4B

Claudine Lacroix·Benjamin Canals·M. D. Nunez-Regueiro
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Abstract

UNi4B exhibits unusual properties and, in particular, a unique antiferromagnetic arrangement involving only 2/3 of the U sites. Based on the low temperature behavior of this compound, we propose that the remaining 1/3 U sites are nonmagnetic due to the Kondo effect. We derive a model in which the coexistence of magnetic and nonmagnetic U sites is the consequence of the competition between frustration of the crystallographic structure and instability of the 5f moments.

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Claudine Lacroix, Benjamin Canals, M. D. Nunez-Regueiro. 1998-07-30. Kondo Screening and Magnetic Ordering in Frustrated UNi4B. https://doi.org/10.1103/physrevlett.77.5126

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