4 CHAPTER 1. STRUCTURAL PROPERTIES OF SEMICONDUCTORS
x
y
z
a 3
a 2
a 1
a
a 3
a 2
a 1
z
y
x
a
a 3
a 2
a 1
(a)
(b)
(c)
Figure 1.1: A simple cubic lattice showing the primitive vectors. The crystal is produced by
repeating the cubic cell through space.