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Using valence band photoemission we have demonstrated the presence of apseudogap in the near Fermi level electronic spectrum of some of the mixedphase compositions of Sm$_{1-x}$Ca$_x$MnO$_3$ system. The pseudogap was foundto grow in size over a large region of the phase diagram of this system,finally leading to a metal-insulator transition. We have made a study comparingthe near Fermi level behaviors of this system to those of a canonical doubleexchange system, namely, La$_{1-x}$Sr$_x$MnO$_3$. This study intends tohighlight one of the important differences between the phase separated anddouble exchange colossal magnetoresistance systems in the nature of theirenergy gaps across the metal-insulator transitions. These differences could beascribed to the distortions in the MnO$_6$ octahedra of their structures thatregulate the localization of charge carriers. We have discussed our resultsfrom the point of view of models based on the idea of phase separation.

Pseudogap behavior of phase-separated Sm$_{1-x}$Ca$_x$MnO$_3$ : A comparative photoemission study with double exchange