Valence Band Dispersion in Angle-Resolved Resonant Photoemission from LaSb.

Angle-resolved photoemission spectra taken on single crystals of LaSb at the La 4{ital d}{r_arrow}4{ital f} resonance show dispersion of resonantly emitted valence-band electrons. This is the first direct demonstration that the Bloch component of valence states participates in resonant photoemission. {copyright} {ital 1996 The American Physical Society.}