Next-nearest-neighbor Coulomb repulsion favors a 2x2 loop current charge density wave on the kagome lattice at van Hove filling, with stronger interactions driving a C6-breaking nematic state and superconducting instabilities descending from the charge fluctuations.
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Exotic charge density waves and superconductivity on the Kagome Lattice
Next-nearest-neighbor Coulomb repulsion favors a 2x2 loop current charge density wave on the kagome lattice at van Hove filling, with stronger interactions driving a C6-breaking nematic state and superconducting instabilities descending from the charge fluctuations.