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Problem: Tight-Binding in Dirac-Delta Potentials

Each atom in a one-dimensional chain of lattice spacing a is represented by a potential of .

(a) Determine the ground state wavefunction of the single-atom problem.

(b) Calculate the bandwidth of the lowest energy band in the tight-binding approximation.

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Laszlo Mihaly
Thu Oct 31 13:23:11 EST 1996

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