We have performed angle-resolved photoemission spectroscopy on UPt3. The ex
perimental result has been compared with the band structure calculation inc
luding the U 5f states. The overall feature of Pt 5d bands shows a good agr
eement between experiment and calculation, while the experimental U 5f band
is much narrower, indicative of the strong renormalization. (C) 1999 Elsev
ier Science B.V. All rights reserved.