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um0123
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Peierls distortion states that for a 1 dimensional polymer (like polyacyteline) with lattice spacing a they should have a half-filled conduction band, why?
And how does changing the lattice space to 2a cause it to form an energy gap? In my mind it should be the same as the first case...
And how does changing the lattice space to 2a cause it to form an energy gap? In my mind it should be the same as the first case...