Exchange splitting and critical-point binding energies for iron (110)

The exchange splitting and several critical-point binding energies along $\Gamma -\Sigma -N$ of the Brillouin zone for ferromagnetic iron have been determined using angle-resolved photoemission. The room-temperature exchange splitting at $\Gamma$ is determined to be 2.08 eV, and critical-point energies obtained from experimental data are found to be in good agreement with theoretical predictions.