1. Brookhaven National Laboratory, Physics Department, Upton, New York 11973, USA;2. University of Pennsylvania, Department of Physics and Laboratory for Research on the Structure of Matter, Philadelphia, Pennsylvania 19104, USA
Abstract:
We have measured the photoemission of monolayers as well as thick films of H2 molecules condensed onto Cu and Au. The adsorbed monolayer exhibits a relaxation energy of 1.75 eV whereas we see a bandlike 1s state for thick layers having a bandwidth of 1.2 eV. We also observe energy loss features which are in agreement with previous electron energy loss and optical absorption studies.