445lec29 - PHYS 445 Lecture 29 Heat capacities in metals...

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PHYS 445 Lecture 29 - Heat capacities in metals 29 - 1 © 2001 by David Boal, Simon Fraser University. All rights reserved; further resale or copying is strictly prohibited. Lecture 29 - Heat capacities in metals What's Important: electrons in metals heat capacities Text : Reif Sec. 19.7; Kittel Chap. 7 Heat capacities in metals are covered in two lectures. Here, the experimental situation is described and compared against expectations for a Fermi gas at low temperature. The proof for the result is given in the following lecture. Electrons in metals Some time back we established that the molar heat capacity of an ideal gas is C v = (3/2) R , (29.1) where the subscript V indicates the system is held at constant volume. In Eq. (29.1), the heat capacity is independent of temperature. In an ideal gas, all atoms or molecules are able to take part in the emission or absorption of energy - there is no restriction on which states the particles can occupy.
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