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most citedOrthorhombic-to-Monoclinic Phase Transition of Ta2NiSe5 Induced by the Bose-Einstein Condensation of Excitons

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cond-mat.str-el2011★ 92 cited

A BCS-BEC crossover in the extended Falicov-Kimball model: Variational cluster approach

K. Seki, R. Eder, Y. Ohta

We study the spontaneous symmetry breaking of the excitonic insulator state induced by the Coulomb interaction in the two-dimensional extended Falicov-Kimball model. Using the…