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arXiv · 1708.02270

Excitonic insulators as a model of $d-d$ and Mott transitions in strongly correlated materials

R. S. Markiewicz·A. Bansil
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Abstract

We show how strongly correlated materials could be described within the framework of an excitonic insulator formalism, and delineate the relationship between inter- and intra-band ordering phenomena. Our microscopic model of excitons clarifies the fundamental role of Van-Hove-singularity-nesting in driving both inter- and intra-band ordering transitions, and uncovers an interesting connection with resonating-valence-bond physics.

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R. S. Markiewicz, A. Bansil. 2017-08-07. Excitonic insulators as a model of $d-d$ and Mott transitions in strongly correlated materials. https://arxiv.org/abs/1708.02270

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