Symmetry breaking in a simple electron–phonon model with electron correlation
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Zero-energy edge states and chiral symmetry breaking at edges of graphite sheets
Two-dimensional graphite sheets with a certain type of edges are known to support boundary states localized near the edges. Forming a flat band with a sharp peak in the density of states at the Fermi energy, they can trigger a magnetic instability or a distortion of the lattice in the presence of electron-electron or electron-phonon interactions. We shall discuss a relationship between chiral s...
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