Fill in the missing steps from (4.9.30) to (4.9.31). First, write a Sommerfeld expansion to second order
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Fill in the missing steps from (4.9.30) to (4.9.31). First, write a Sommerfeld expansion to second order in T for the total electron number N. The lowest-order terms of both U and N can then be expanded as
Using the constraint that N is constant for all temperatures, you can obtain a relation for μ in terms of T and substitute this into the equation for U, and then take its derivative, keeping terms to lowest order in T.
Transcribed Image Text:
[th B EF H(E)DE ~ ~ f H(E)dE+ H(EF)(µ – Ef). (4.9.32)
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The number of electrons is equal to N NEDE dE 4919 Following the same logic as equations 49254930 ...View the full answer
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