Kondo Screening and Magnetic Ordering in Frustrated UNi4B

Details Kondo Screening and Magnetic Ordering in Frustrated UNi4B Kondo Screening and Magnetic Ordering in Frustrated UNi4B

1998-07-30

arxiv.org/abs/cond-mat/9807408v1

Phys. Rev. Lett. 77, 5126 (1996)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.77.5126

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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