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cond-mat.str-el2012★ 82 cited
Charge instabilities and topological phases in the extended Hubbard model on the honeycomb lattice with enlarged unit cell
Adolfo G. Grushin, Eduardo V. Castro, Alberto Cortijo +3
We study spontaneous symmetry breaking in a system of spinless fermions in the Honeycomb lattice paying special emphasis to the role of an enlarged unit cell on time reversal symme…
cond-mat.str-el2012★ 29 cited
Change of an insulator's topological properties by a Hubbard interaction
Miguel A. N. Araújo, Eduardo V. Castro, Pedro D. Sacramento
We introduce two dimensional fermionic band models with two orbitals per lattice site, or one spinful orbital, and which have a non-zero topological Chern number that can be change…