Heavy-Fermion Valence-Bond Liquids in Ultracold Atoms: Cooperation of the Kondo Effect and Geometric Frustration.
Heavy-Fermion Valence-Bond Liquids in Ultracold Atoms: Cooperation of the Kondo Effect and Geometric Frustration.
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DOI：
10.1103/physrevlett.115.165302
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发表时间：
2015-05
影响因子：
8.6
通讯作者：
L. Isaev;A. Rey
中科院分区：
文献类型：
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作者：
L. Isaev;A. Rey
我们分析了近藤晶格中重费米液体和几何挫败共存背后的微观机制。我们考虑几何挫败周期性安德森模型，并证明当只有局域单线态参与低能物理时，轨道涨落如何在极强挫败的极限下导致近藤屏蔽相。我们还提出了一种利用 SU(3) 对称碱土冷原子来实现和研究这种奇异态的装置。
We analyze a microscopic mechanism behind the 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 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.