W.D. Grobman
Journal of Physics and Chemistry of Solids
The energy gap between the lowest two valence bands for several binary compounds has been determined from photoemission distributions and is found to be a good measure of the ionicity parameter C of the Philips-Van Vechten theory. © 1973.
W.D. Grobman
Journal of Physics and Chemistry of Solids
F.J. Himpsel, Y. Jugnet, et al.
Nuclear Instruments and Methods In Physics Research
J. Freeouf, D.E. Eastman
C R C Critical Reviews in Solid State Sciences
D.E. Eastman, J. Freeouf
Physical Review Letters