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The Mystery of Semiconductor-Metal Hybrids
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[QUOTE="Simon Bridge, post: 4326512, member: 367532"] In the band theory of solids: ... the atomic energy levels smear out to become energy [i]bands[/i]... the concept of "orbitals" no longer makes sense. But you are correct - in that model, a solid is an insulator or a semi-conductor depending on the size of the band-gap. To be a conductor, the band gap must be zero or less ... the valence and conduction bands [i]overlap[/i]. note: The definition of "a metal" predates band theory. [/QUOTE]
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The Mystery of Semiconductor-Metal Hybrids
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