Abstract
We systematically study the dissociation processes for hydrogen molecules on the Be(0001) surface. The minimum dissociation energy barrier is found to be 0.75 eV on the clean surface, and the dissociated hydrogen atoms are found to distribute universally on the Be surface. After hydrogen preadsorption, the dissociation energy barrier become 0.50 eV for molecular hydrogen on the Be surface. Our studies well describe the adsorption behaviors of hydrogen on the Be(0001) surface.
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