The high-resolution photoemission spectroscopy study of single crystalline
CeNiSn indicates a finite density of states at E-F, implying a semi-metalli
c ground state. This finding is supported by the lineshape analysis using t
he DOS models. The Ce 4f spectrum exhibits three peak structures, in which
the peak near-E-F is found to reflect a substantially large Ce 4f-Sn sp hyb
ridization. (C) 1999 Elsevier Science B.V. All rights reserved.