1-6 EV OPTICAL REFLECTIVITY AND XPS PHOTOEMISSION MEASUREMENTS OF MNSB

Manganese monoantimonide, Mn(III)Sb, was investigated by means of near -IR, visible and X-ray photoelectron spectroscopies. The near-IR spect ra allowed us to locate experimentally the energetic positions of the Mn 3d orbitals and to compare them with the calculated energy levels d iagram reported by Coehoorn et al. (Phys. Rev. B, 31 (1985) 1980). The measured Mn 3d bandwidth confirms the presence of a Mn 3d-Sb 5p hybri dization. Two further transitions at higher energy, were detected in b oth the visible and the XPS spectroscopies, and assigned to interband transitions or to free-electron plasma resonance. (C) 1997 Elsevier Sc ience B.V.