  We have studied the temperature evolution of the inverse photoemission
spectra of phase separated La$_{0.2}$Sr$_{0.8}$MnO$_{3}$. To identify the
features in the room temperature experimental spectra, band structure
calculations using Korringa-Kohn-Rostoker Green's function method were carried
out. We find that the features generated by local moment disorder calculations
give a better match with the experimental spectrum. In the insulating phase, we
observed unusually an increased intensity at around the Fermi level. This
puzzling behaviour is attributed to the shift in the chemical potential towards
the conduction band. The present results clearly show the importance of
unoccupied electronic states in better understanding of the phase separated
systems.
