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arXiv · 1312.6771

Correlation-driven phase transition in a Chern insulator

Hong-Son Nguyen·Minh-Tien Tran
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Abstract

The phase transition driven by electron correlations in a Chern insulator is investigated within the dynamical mean-field theory. The Chern insulator is described by the Haldane model and the electron correlations are incorporated by introducing the short-range interaction between the itinerant electrons and localized fermions. In the preservation of the inversion symmetry, the electron correlations drive the system from the Chern insulator to a renormalized pseudogap metal, and then to the topologically trivial Mott insulator. When the inversion symmetry is broken, a charge ordering and a nontrivial Chern topological invariant coexist.

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Hong-Son Nguyen, Minh-Tien Tran. 2013-12-24. Correlation-driven phase transition in a Chern insulator. https://doi.org/10.1103/physrevb.88.165132

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