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Unformatted text preview: speciFc heat at 100K? c. Is the DebyeWaller factor Fnite or zero and why? Now account for the potential of the surface, ie. allow for the corrugation of the surface by adding a potential energy φ = K 2 X n,i s 2 ni where s is, as usual, the displacement from equilibrium, and K = 6 . 7 × 10 4 gm / sec 2 . The wave solutions are of the form s ni = e ni e ( i k · r nωt ) d. What are the new frequencies for k = 0? e. What is the form of the temperature dependence of the speciFc heat neat T = 0? f. Is the DebyeWaller factor Fnite or zero and why? 1...
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This note was uploaded on 01/10/2012 for the course PHYSICS 707 taught by Professor Electrodynamics during the Fall '11 term at LSU.
 Fall '11
 Electrodynamics

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