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Absence of a Magnetic Field Induced Metal-Insulator Transition in Kondo Insulators

Herve M. Carruzzo·Clare C. Yu
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Abstract

We investigate whether or not Kondo insulators undergo a magnetic field induced metal-insulator transition in one dimension at half filling using both a density matrix formulation of the numerical renormalization group and a new analytical approach. Contrary to expectations, the quasiparticle gap never vanishes at any field and no metal-insulator transition is found. We discuss generalizing our result to three dimensions and to the asymmetric Anderson lattice. Our result is consistent with recent experiments.

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Herve M. Carruzzo, Clare C. Yu. 1994-12-12. Absence of a Magnetic Field Induced Metal-Insulator Transition in Kondo Insulators. https://arxiv.org/abs/cond-mat/9412050

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