Solution of the Two-Channel Anderson Impurity Model - Implications for the Heavy Fermion UBe${}_{13}$ -

Abstract

We solve the two-channel Anderson impurity model using the Bethe-Ansatz. We determine the ground state and derive the thermodynamics, obtaining the impurity entropy and specific heat over the full range of temperature. We show that the low temperature physics is given by a line of fixed points decribing a two-channel non Fermi liquid behavior in the integral valence regime associated with moment formation as well as in the mixed valence regime where no moment forms. We discuss relevance for the theory of UBe${}_{13}$.

4 pages, 2 figures, (to be published in PRL)

References in corpus (5)

• Characteristic Crossing Points in Specific Heat Curves of Correlated Systems
• Solution of the Multichannel Coqblin-Schrieffer Impurity Model and Application to Multi-Level systems
• Nonlinear Susceptibility: A Direct Test of the Quadrupolar Kondo Effect in UBe(13)
• Mixed-valent regime of the two-channel Anderson impurity as a model for UBe_13
• Small Energy Scale for Mixed-Valent Uranium Materials

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