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Crystal field states in conducting magnetic materials: NdAl2, UPd2Al3 and YbRh2Si2

R. J. Radwanski Z. Ropka
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Abstract

The existence of CEF states and the magnetism in conducting compounds NdAl2, UPd2Al3 and YbRh2Si2 is discussed. We point out that in metallic compounds localized crystal-field states coexist with conduction electrons. These compounds are physical realization of an anisotropic spin liquid, which in case of the atomic-like configuration with an odd number of f electrons, is unstable with respect to spin fluctuations for T->0K. YbRh2Si2 is discussed as a compound with the Kramers doublet ground state with a very low magnetic ordering temperature being a reason for the quantum critical point phenomena at low T.

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R. J. Radwanski Z. Ropka. 2005-06-01. Crystal field states in conducting magnetic materials: NdAl2, UPd2Al3 and YbRh2Si2. https://arxiv.org/abs/cond-mat/0506021

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