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Kondo effect versus Jahn-Teller effect: A new class of quantum impurity problems

Alexander O. Gogolin
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Abstract

Impurity ions with orbitally degenerate ground electronic configuration embedded in metals are subjects to both the Kondo effect and the Jahn-Teller instability. While increasing the Jahn-Teller coupling, one passes, from the region of parameters where the perturbation theory is applicable, through a complicated intermediate region, to a region where phonons, localized electrons and conduction electrons form a coherent state.

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Alexander O. Gogolin. 1995-04-12. Kondo effect versus Jahn-Teller effect: A new class of quantum impurity problems. https://arxiv.org/abs/cond-mat/9504028

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