Diatomic chain Consider the normal modes of a linear chain in which the force constants between nearest-neighbor
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Diatomic chain Consider the normal modes of a linear chain in which the force constants between nearest-neighbor atoms are alternately C and 10C. Let the masses he equal, and let the nearest-neighbor separation he a/2. Find w(K) at K = 0 and K = π/a. Sketch in the dispersion relation by eye. This problem simulates a crystal of diatomic molecules such as H2.
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By analogy with Eq 18 Mdudt Cv u C V U ...View the full answer
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