Quantum mechanics of electrons in crystal lattices by R. de L. Kronig and W. G. Penney 2026-11-05
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By R. de L. Kronig and W. G. Penney. Proceedings of the Royal Society A 130, 499–513. Section 1, pp. 500–503, derives the periodic rectangular-barrier model, its narrow-barrier limit and the allowed/forbidden energy intervals; the printed received date is 13 November 1930.
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