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Crystal Distortion and the Two-Channel Kondo Effect

C. N. Hind·A. O. Gogolin
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Abstract

We study a simple model of the two-channel Kondo effect in a distorted crystal. This model is then used to investigate the interplay of the Kondo and Jahn-Teller effects, and also the Kondo effect in an impure crystal. We find that the Jahn-Teller interaction modifies the characteristic energy scale of the system below which non-Fermi-liquid properties of the model become apparent. The modified energy scale tends to zero as the limit of a purely static Jahn-Teller effect is approached. We find also that the non-Fermi-liquid properties of the quadrupolar Kondo effect are not stable against crystal distortion caused by impurities.

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C. N. Hind, A. O. Gogolin. 1998-06-18. Crystal Distortion and the Two-Channel Kondo Effect. https://doi.org/10.1088/0953-8984%2F10%2F47%2F014

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