Abstract
Barrier heights of the interfaces between metal monolayers and the (110) surfaces of GaAs, GaP, ZnSe and ZnS were calculated in the tight-binding approach. The slopes of the calculated dependences of barrier height vs work function agree very well with experiment in all cases. In accordance with recent empirical conclusions the calculation indicates that covalent crystals have stronger chemical bonds with metal overlayers than do ionic crystals.
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