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arXiv · 1505.06271

Heavy-fermion valence-bond liquids in ultracold atoms: Cooperation of Kondo effect and geometric frustration

L. Isaev·A. M. Rey
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Abstract

We analyze a microscopic mechanism behind coexistence of a heavy Fermi liquid and geometric frustration in Kondo lattices. We consider a geometrically frustrated periodic Anderson model and demonstrate how orbital fluctuations lead to a Kondo-screened phase in the limit of extreme strong frustration when only local {\it singlet} states participate in the low-energy physics. We also propose a setup to realize and study this exotic state with $SU (3)$-symmetric alkaline-earth cold atoms.

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L. Isaev, A. M. Rey. 2015-05-23. Heavy-fermion valence-bond liquids in ultracold atoms: Cooperation of Kondo effect and geometric frustration. https://doi.org/10.1103/physrevlett.115.165302

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