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Anomalous magnetic response of the valence-fluctuating compound YbInCu4

J. K. Freericks·V. Zlatic
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Abstract

The exact solution of the spin one-half Falicov-Kimball model, with random hopping between the lattice sites, is used to explain the anomalous magnetic response of Yb-based valence-fluctuating intermetallic compounds. The anomalous behavior arises from an entropy-driven local-moment--nonmagnetic transition of unhybridized Yb ions in these materials which can also be used to explain the observed metamagnetism and resistivity anomalies.

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J. K. Freericks, V. Zlatic. 1996-07-09. Anomalous magnetic response of the valence-fluctuating compound YbInCu4. https://arxiv.org/abs/cond-mat/9607068

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