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Science · Advanced Physics
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Gold (Au), has a Fermi energy EF 5.53 eV 8.85 x 10 -19 resistivity p 2.40 x 10 2m, and number density of free electrons n So nm 5.90 x 28 m Useful constants are listed kn 1.38 x 10 23 JIK Boltzmann constant 1.6 x 10 C electron charge me 9.1 x 10 kg electron mass -31 a) Calculate the Fermi speed vF (in m/s) for the free electrons in Au. b) Calculate the mean free time between collisions T c calculate the mean free path L ofthe electrons. Express Lin both m and nm. d) Calculate the approximate lattice spacing d in nm and then the ratio Lld. e) Calculate the length in nm) of the photon which corresponds given Fermi energy. to the

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