Abstract
High-resolution photoemission is used to study the electronic structure
of the cuprate superconductor, Bi2Sr2CaCu2O8+δ, as a function of
hole doping and temperature. A kink observed in the band dispersion
in the nodal line in the superconducting state is associated with
coupling to a resonant mode observed in neutron scattering. From
the measured real part of the self-energy it is possible to extract
a coupling constant which is largest in the underdoped regime, then
decreasing continuously into the overdoped regime.
Users
Please
log in to take part in the discussion (add own reviews or comments).