SEMICONDUCTOR DEVICE PHYSICS AND DESIGN

1.2. CRYSTAL STRUCTURE 5

a

Two atoms per basis

Basis atoms same: Diamond structure

Basis atoms different: Zinc blende

Figure 1.2: The body centered cubic lattice along with a choice of primitive vectors.

z

y

x

a 3

a 2

a 1

a

fcc latti ce

Figure 1.3: Primitive basis vectors for the face centered cubic lattice.