1. (a) At absolute temperature T= 0, the probability is zero that any state with energy above the Fermi energy is occupied. (b) The probability that a state with energy Eis occupied at temperature Tis given by P EeEEkTF()()/=+−11where kis the Boltzmann constant and EFis the Fermi energy. Now, E – EF= 0.0620 eV and 5()/(0.0620eV) /(8.6210eV / K)(320K)2.248FEEkT−−=×=, so 2.2481()0.0955.1P Ee==+See Appendix B or Sample Problem 41-1 for the value of k.
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