Topological States with Broken Translational and Time-Reversal Symmetries in a Honeycomb-Triangular Lattice

R. Sarjonen; P. Törmä

doi:10.1103/physreva.91.063605

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arXiv · 1409.6563

Topological States with Broken Translational and Time-Reversal Symmetries in a Honeycomb-Triangular Lattice

R. Sarjonen·P. Törmä

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Abstract

We study fermions in a lattice, with on-site and nearest neighbor attractive interactions between two spin species. We consider two geometries: both spins in a triangular lattice, and a mixed geometry with up-spins in honeycomb and down-spins in triangular lattices. We focus on the interplay between spin-population imbalance, on-site and valence bond pairing, and order parameter symmetry. The mixed geometry leads to a rich phase diagram of topologically non-trivial phases. In both geometries, we predict order parameters with simultaneous time-reversal and translational symmetry breaking.

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BibTeX RIS

R. Sarjonen, P. Törmä. 2015-01-20. Topological States with Broken Translational and Time-Reversal Symmetries in a Honeycomb-Triangular Lattice. https://doi.org/10.1103/physreva.91.063605

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