(a) Use the data shown in Fig. 7-7 to determine the Fermi energy of liquid He' which can also be considered as a gu of particles obeying Fermi-Dirac statistics. (b) Determine the Fermi velocity and temper11ture for He'. (See Problem 13- 17).
The Fermi velocity is defined as and that Fermi temperature as (a) Calculate values of the Fermi velocity, momentum, and temperature for electrons in silver. (b) Determine the magnitude of the second term in Eqs. (13-47), (13- 52), (13- 54), (13- 57}, (13-58), and (13- 99) at room temperature. (c) At what does the second term contribute approximately a 1% correction in the above equations?
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2. The free electrons in silver can be considered an electron gas. Calculate the compressibility and expansively of this gas and compare them to the experimental values for silver of respectively.