In a half-filled breathing kagome Hubbard model, stronger breathing (smaller inter-cell hopping) reduces the critical Hubbard U for the metal-insulator transition, as determined by dc conductivity and density of states.
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Breathing-Driven Metal-Insulator Transition in Correlated Kagome Systems
In a half-filled breathing kagome Hubbard model, stronger breathing (smaller inter-cell hopping) reduces the critical Hubbard U for the metal-insulator transition, as determined by dc conductivity and density of states.