Abstract
We have computed the self-consistent electronic structure and total energy as a function of the distance between surfaces of ten bimetallic contacts -- all combinations of Al(111), Mg(0001), Zn(0001), and Na(110). Volume effects are found to be very important to the bimetallic interaction. The kinetic energy initiates the bond, while the exchange-correlation energy is the dominant contributor to the strength of the adhesive bond. It was found that a single relation between the total energy and interfacial distance accurately describes the energetics of all ten contacts, as well as many cases of chemisorption, cohesion, and molecular interaction.
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