Inversion of ARPES measurements in high Tc cuprates
arXiv:cond-mat/0207145
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.
v2: More detailed discussion of the used inversion procedure is added