Chapter 11
1. Calculate the reflectivity of sodium in the frequency ranges > 1 and < 1
using the theory for free electrons without damping. sketch R versus frequency
Chapter 8
1. Calculate the number of electrons in the conduction band for silicon at T=300K.
(Assume me*/m0 = 1)
number of electrons in the conduction band per cm3
*
me /m0 =1, T=300K Silicon Eg=1.12eV
kB=8.616*10-5eV/k
3. Calculate the Fermi
Problem 2.
Calculate the conductivity from the index of refraction and the damping
constant for copper (0.14 and 3.35, respectively : measurement of room
temperature and =0.6). compare your result with the conductivity of
copper (see Appendix4.). You will
CHAPTER 5.
1. What is the energy difference between the points L2` and L1 (upper) in the band
diagram for copper ?
L2` = 8eV
L1 = 14eV
L2` L1 6eV
3. Calculate how much the kinetic energy of a free electron a the corner of the first
Brillouin zone of a sim
Chapter 7
1. Calculate the number of free electron for gold using its density and its atomic
mass.
3. Calculate the time between two collisions and the mean free path for pure
copper at room temp. Discuss whether or not this result make