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Where n is the areal density of atoms to estimate

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Unformatted text preview: where n is the areal density of atoms To estimate Fermi energy we need to know the number of outermost valence electrons each atom has… I II 11 12 Na Mg III IV V VI VII VIII 13 14 15 16 17 18 Al Si P S Cl Ar 2D Monatomic Square Crystals 2D Dispersion Relations a = 5.5 A conductor insulator W Γ conductor X Reducing a, makes Mg a conductor ! I II 11 12 Na Mg Al Mg Na III IV V VI VII VIII 13 14 15 16 17 18 Al Si P S Cl Ar Name: __________________ Matrix element (s-px) _________________________ Matrix element (s-py) _________________________ Matrix element (px -px) _________________________ Matrix element (px - py) _________________________...
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