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Effects of Interaction in the Hofstadter regime of the honeycomb lattice

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Published Article
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DOI: 10.1103/PhysRevB.93.125134
arXiv ID: 1512.05224
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arXiv
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Abstract

We investigate phases of spinless fermions on the honeycomb lattice with nearest neighbor interaction in the Hofstadter regime. The interaction induces incompressible nematic and ferri-electric phases with broken translation symmetry. Some of the transitions are accompanied by changes in the Hall conductivity. We study pair correlations and show that the quantum metric, averaged over the Brillouin zone, characterizes the shape of the pair correlation function.

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