Chegg Guided Solutions for Fundamentals of Semiconductor Devices
1st Edition Chapter S1B Problem 3A  0 Stars(0 users)  Consider
the phonon E-K diagram of Figure S1B.7, for a crystal with two
types of atoms, of mass M1 and M2 in a zinc blende lattice.  a)
Since the lattice constants are nearly equal, we can assume the
force between atoms to be comparable. For a material consisting
of a single atom type (e.g. silicon), the lattice becomes a
diamond lattice and M1=M2. Explain why the optical phonon energy
for diamond (carbon) is greater than that for silicon, which is
in turn greater than that for germanium.      View this
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