Evsk→and Inverse Lifetime of Cu(110)

Abstract

We present a very accurate determination of the valence bands of copper along $\Gamma \mathrm{KX}$. This is obtained with high-resolution angle-resolved photoemission spectroscopy, using synchrotron radiation in the $15<~\hslash \omega <~100$ eV photon energy range. In addition the data yield inverse lifetime measurements for the $3d$ hole at the top and the bottom of the $d$ band which have a value much smaller (< 50 and 250 meV) than recently reported.