Exact anomalous mobility edge formulas are derived for a cross-stitch flat-band lattice with anti-symmetric mosaic quasi-periodic potentials, yielding multiple transitions between localized and multifractal critical states.
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Exact multiple anomalous mobility edges in a flat band geometry
Exact anomalous mobility edge formulas are derived for a cross-stitch flat-band lattice with anti-symmetric mosaic quasi-periodic potentials, yielding multiple transitions between localized and multifractal critical states.