Kondo lattice mediated interactions in flat-band systems

Pramod Kumar, Guangze Chen, Jose Lado

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)
124 Downloads (Pure)


Electronic flat bands represent a paradigmatic platform to realize strongly correlated matter due to their associated divergent density of states. In common instances, including electron-electron interactions leads to magnetic instabilities for repulsive interactions and superconductivity for attractive interactions. Nevertheless, interactions of a Kondo nature in flat-band systems have remained relatively unexplored. Here we address the emergence of interacting states mediated by Kondo lattice coupled to a flat-band system. Combining dynamical mean-field theory and tensor networks methods to solve flat-band Kondo lattice models in one and two dimensions, we show the emergence of a robust underscreened regime leading to a magnetically ordered state in the flat band. Our results put forward flat-band Kondo lattice models as a platform to explore the genuine interplay between flat-band physics and many-body Kondo screening.
Original languageEnglish
Article number043113
Pages (from-to)1-9
Number of pages9
Issue number4
Publication statusPublished - Dec 2021
MoE publication typeA1 Journal article-refereed


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  • -: Lado Jose AT-palkka

    Lado, J.


    Project: Academy of Finland: Other research funding

  • -: Lado Jose AT-kulut

    Lado, J., Hyart, T., Kumar, P. & Koch, R.


    Project: Academy of Finland: Other research funding

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