Heterodimensional Kondo superlattices with strong anisotropy

Qi Feng, Junxi Duan (), Ping Wang, Wei Jiang (), Huimin Peng, Jinrui Zhong, Jin Cao, Yuqing Hu, Qiuli Li, Qinsheng Wang, Jiadong Zhou () and Yugui Yao ()
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Qi Feng: Beijing Institute of Technology
Junxi Duan: Beijing Institute of Technology
Ping Wang: Beijing Institute of Technology
Wei Jiang: Beijing Institute of Technology
Huimin Peng: Beijing Institute of Technology
Jinrui Zhong: Beijing Institute of Technology
Jin Cao: Beijing Institute of Technology
Yuqing Hu: Beijing Institute of Technology
Qiuli Li: Beijing Institute of Technology
Qinsheng Wang: Beijing Institute of Technology
Jiadong Zhou: Beijing Institute of Technology
Yugui Yao: Beijing Institute of Technology

Nature Communications, 2024, vol. 15, issue 1, 1-7

Abstract: Abstract Localized magnetic moments in non-magnetic materials, by interacting with the itinerary electrons, can profoundly change the metallic properties, developing various correlated phenomena such as the Kondo effect, heavy fermion, and unconventional superconductivity. In most Kondo systems, the localized moments are introduced through magnetic impurities. However, the intrinsic magnetic properties of materials can also be modulated by the dimensionality. Here, we report the observation of Kondo effect in a heterodimensional superlattice VS2-VS, in which arrays of the one-dimensional (1D) VS chains are encapsulated by two-dimensional VS2 layers. In such a heterodimensional Kondo superlattice, we observe the typical Kondo effect but with intriguing anisotropic field dependence. This unique anisotropy is determined to originate from the magnetic anisotropy which has the root in the unique 1D chains in the structure, as corroborated by the first-principles calculation. Our results open up a novel avenue of studying exotic correlated physics in heterodimensional materials.

Date: 2024
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DOI: 10.1038/s41467-024-49618-x

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