FIR resonances of MATBG flat bands are observed and attributed to c-electron transitions renormalized by c-f hybridization, with an optical selection rule from a hidden rotational symmetry.
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Resonant Far-Infrared Spectroscopy of Flat-Band Fermions in Magic Angle Graphene
FIR resonances of MATBG flat bands are observed and attributed to c-electron transitions renormalized by c-f hybridization, with an optical selection rule from a hidden rotational symmetry.