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.
@article{arxiv.cond-mat/0207145,
title = {Inversion of ARPES measurements in high Tc cuprates},
author = {S. Verga and A. Knigavko and F. Marsiglio},
journal= {arXiv preprint arXiv:cond-mat/0207145},
year = {2007}
}
Comments
v2: More detailed discussion of the used inversion procedure is added