Inversion of ARPES measurements in high Tc cuprates
S. Verga, A. Knigavko, F. Marsiglio
Abstract
Recent energy dispersion measurements in several families of the hole-doped copper oxides have revealed a kink in the energy vs. momentum relation. These have tentatively been identified as due to electron phonon coupling. We invert this data directly to determine the bosonic spectral function; the kink gives rise to a singular function in the phonon energy region.
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