Kondo lattice mediated interactions in flat-band systems
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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9
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Physical Review Research, Volume 3, issue 4, pp. 1-9
Abstract
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.Description
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Kumar, P, Chen, G & Lado, J 2021, 'Kondo lattice mediated interactions in flat-band systems', Physical Review Research, vol. 3, no. 4, 043113, pp. 1-9. https://doi.org/10.1103/PhysRevResearch.3.043113