Charge instabilities and topological phases in the extended Hubbard model on the honeycomb lattice with enlarged unit cell

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 symmetry broken phases. We use a tight-binding model with nearest-neighbor hopping t and Hubbard interaction V sub(1) and V s...

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Veröffentlicht in:	Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2013-02, Vol.87 (8), Article 085136
Hauptverfasser:	Grushin, Adolfo G., Castro, Eduardo V., Cortijo, Alberto, de Juan, Fernando, Vozmediano, María A. H., Valenzuela, Belén
Format:	Artikel
Sprache:	eng
Schlagworte:	Broken symmetry Charge Condensed Matter Expansion Honeycomb Honeycomb construction Phases Physics Strongly Correlated Electrons Topology Unit cell
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