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Solid State Communications
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.
J.F. van der Veen, P. Heimann, et al.
Solid State Communications
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Solid State Communications
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Physical Review B
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Physical Review B