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Incommensurability enabled quasi-fractal order in 1D narrow-band moiré systems
Miguel Gonçalves, Bruno Amorim, Flavio Riche +2
We demonstrate that quasiperiodicity can radically change the ground state properties of 1D moiré systems with respect to their periodic counterparts. By studying an illustrative e…
Edge magnetism in transition metal dichalcogenide nanoribbons: Mean field theory and determinant quantum Monte Carlo
Francisco M. O. Brito, Linhu Li, João M. V. P. Lopes +1
Edge magnetism in zigzag transition metal dichalcogenide nanoribbons is studied using a three-band tight-binding model with local electron-electron interactions. Both mean field th…
Interplay of interactions, disorder and topology in the Haldane-Hubbard model
Tian-Cheng Yi, Shijie Hu, Eduardo V. Castro +1
We investigate the ground-state phase diagram of the spinless Haldane-Hubbard model in the presence of quenched disorder, contrasting results obtained from both exact diagonalizati…
Interplay of local order and topology in the extended Haldane-Hubbard model
Can Shao, Eduardo V. Castro, Shijie Hu +1
We investigate the ground-state phase diagram of the spinful extended Haldane-Hubbard model on the honeycomb lattice using an exact-diagonalization, mean-field variational approach…
Robust band of critical states in T broken fermionic systems with lattice selective disorder
Eduardo V. Castro, Raphael de Gail, M. Pilar López-Sancho +1
We analyze the localization properties of two dimensional systems based on partite lattices with a basis. Contrary to standard results, we find that a band of critical states emerg…
Temperature-driven gapless topological insulator
Miguel Gonçalves, Pedro Ribeiro, Rubem Mondaini +1
We investigate the phase diagram of the Haldane-Falicov-Kimball model -- a model combining topology, interactions and spontaneous disorder at finite temperatures. Using an unbiased…