Knight Shift Anomalies in Heavy Electron Materials
Eunsik Kim, M. S. Makivik, D. L. Cox
Abstract
We calculate non-linear Knight Shift K vs. susceptibility χ anomalies for Ce ions possessing local moments in metals. The ions are modeled with the Anderson Hamiltonian and studied within the non-crossing approximation (NCA). The K-vs.- χ non-linearity diminishes with decreasing Kondo temperature T0 and nuclear spin- local moment separation. Treating the Ce ions as an incoherent array in CeSn3, we find excellent agreement with the observed Sn K(T) data.
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