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Unformatted text preview: speciFc heat at 100K? c. Is the Debye-Waller 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 n-ωt ) 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 Debye-Waller 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